Modeling
Guitar Processor
Owner’s
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Manual
If you want to dispose this product, do not mix it with general household waste. There is
separate collection system for used electronic products in accordance with legislation that
requires proper treatment, recovery and recycling.
a
DECLARATION OF CONFORMITY
Manufacturer’s Name:
Manufacturer’s Address:
DigiTech
8760 S. Sandy Parkway
Sandy, Utah 84070, USA
Private household in the 25 member states of the EU, in Switzerland and Norway may return their used
electronic products free of charge to designated collection facilities or to a retailer (if you purchase a similar
new one).
For Countries not mentioned above, please contact your local authorities for a correct method of disposal.
By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and
recycling and thus prevent potential negative effects on the environment and human health.
declares that the product:
Product name:
RP255
Product option:
all (requires Class II power
adapter that conforms to the
requirements of EN60065,
EN60742, or equivalent.)
conforms to the following Product Specifications:
Safety:
EMC:
IEC 60065 (7th ed. 2001)
EN 55013 (2001 + A1)
EN 55020 (1998)
Supplementary Information:
The product herewith complies with the requirements of the Low
Voltage Directive 2006/95/EC and the EMC Directive 2004/108/EC.
Vice-President of Engineering
8760 S. Sandy Parkway
Sandy, Utah 84070, USA
Date: January 02, 2009
European Contact:
Your local DigiTech Sales and
Service Office or
Harman Music Group
8760 South Sandy Parkway
Sandy, Utah 84070 USA
Ph: (801) 568-8800
Fax: (801) 568-7583
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SectionThree - Models and Parameters
About the Models..........................................................19
Model Definitions ..........................................................20
Pickup ...............................................................................20
Wah...................................................................................20
Compressor....................................................................21
Distortion........................................................................21
Amplifier...........................................................................23
Cabinet.............................................................................25
EQ......................................................................................26
Noise Gate......................................................................26
Chorus/FX.......................................................................27
Chorus...........................................................................27
Flanger ...........................................................................28
Phaser ............................................................................28
Vibrato............................................................................29
Rotary Speaker............................................................29
VibroPan.........................................................................30
Tremolo..........................................................................30
Panner............................................................................30
Envelope Filter.............................................................31
AutoYaTM ........................................................................31
YaYa™.............................................................................31
Step Filter......................................................................32
DigiTech Whammy™..................................................32
Pitch Shift......................................................................33
Detune...........................................................................33
Harmony Pitch Shifting..............................................34
Delay.................................................................................35
Reverb ..............................................................................36
Table of Contents
Section One - Introduction
Getting Acquainted..........................................................1
Included Items ..................................................................1
About the RP255.............................................................2
Performance Mode.......................................................2
Bypass Mode ..................................................................2
Tuner Mode.....................................................................2
Tone Library Knob........................................................4
Effects Library Knob.....................................................4
Master Level Knob........................................................4
X-EditTM Editor/Librarian.............................................4
Presets.............................................................................5
A Guided Tour of the RP255........................................6
Front Panel .....................................................................6
Rear Panel.....................................................................10
Getting Started...............................................................12
Making Connections......................................................12
Mono Operation - Amplifier ....................................12
Stereo Operation........................................................13
Applying Power ..............................................................15
SectionTwo - Editing Functions
Editing/Creating Presets...............................................16
Storing/Copying/Naming a Preset..............................17
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Section Four - Other Functions
Phrase Looper................................................................38
Drum Machine................................................................39
Aux Input.........................................................................40
Expression Pedal ............................................................40
Factory Reset..................................................................41
Expression Pedal Calibration ......................................42
Section Five - Appendix
Specifications...................................................................43
Expression Pedal - Assignable Parameters...............45
Tone LIbrary....................................................................47
Effects Library.................................................................48
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Warranty
We at DigiTech® are very proud of our products and back up each one we sell with the following warranty:
1. The warranty registration card must be mailed within ten days after purchase date to validate this
warranty.
2. DigiTech warrants this product, when used solely within the U.S., to be free from defects in materials and
workmanship under normal use and service.
3. DigiTech liability under this warranty is limited to repairing or replacing defective materials that show
evidence of defect, provided the product is returned to DigiTechWITH RETURN AUTHORIZATION,
where all parts and labor will be covered up to a period of one year.A Return Authorization number may
be obtained from DigiTech by telephone.The company shall not be liable for any consequential damage as a
result of the product’s use in any circuit or assembly.
4. Proof-of-purchase is considered to be the burden of the consumer.
5. DigiTech reserves the right to make changes in design, or make additions to, or improvements upon this
product without incurring any obligation to install the same on products previously manufactured.
6. The consumer forfeits the benefits of this warranty if the product’s main assembly is opened and tampered
with by anyone other than a certified DigiTech technician or, if the product is used with AC voltages outside
of the range suggested by the manufacturer.
7. The foregoing is in lieu of all other warranties, expressed or implied, and DigiTech neither assumes nor
authorizes any person to assume any obligation or liability in connection with the sale of this product. In no
event shall DigiTech or its dealers be liable for special or consequential damages or from any delay in the
performance of this warranty due to causes beyond their control.
NOTE:The information contained in this manual is subject to change at any time without notification. Some
information contained in this manual may also be inaccurate due to undocumented changes in the product or
operating system since this version of the manual was completed.The information contained in this version of
the owner’s manual supersedes all previous versions.
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Section 1 - Introduction
Getting Acquainted
Congratulations on your purchase of the RP255. You now have an incredibly advanced modeling
guitar processor that can keep up with your creative impulses and even increase them. Armed
with DigiTech®’s patented AudioDNA2® custom audio DSP chip, the RP255 gives you a huge
selection of tones and effects, right at your fingertips.When you easily dial up a tone or effect
from the Tone Library or the Effects Library, you’ll appreciate the accuracy in each model, and the
dynamic interaction in each tone. Add USB support for computer recording with the included
Cubase LE® 4 software and a built-in drum machine, and you have the RP255: the key to unlock
your creative potential.
Included Items
Before you get started, please make sure that the following items have been included:
• RP255
• Cubase® LE 4 Recording Software DVD
• PS0913B Power Supply
• Warranty Card
The utmost care was taken while your RP255 was being manufactured. Everything should be
included and in perfect working order. If anything is missing, contact the factory at once. Please
help us become acquainted with you and your needs by completing your warranty card or regis-
Disclaimer: DigiTech, Lexicon,Whammy,YaYa,AutoYa, and Johnson Amplification are trademarks of Harman
International Industries, Inc. Other product names modeled in this product are trademarks of their respec-
tive companies that do not endorse and are not associated or affiliated with DigiTech or Harman International
Industries, Inc.They are trademarks of other manufacturers and were used merely to identify products whose
sounds were reviewed in the creation of this product.
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1
About the RP255
Performance Mode
When you first apply power to the RP255, it powers up in Performance mode. Performance mode
provides access to all of the presets within the RP255 via the Up and Down Footswitches.
Knob 1 selects a tone from theTone Library, Knob 2 selects an effect from the Effects Library,
Knob 3 adjusts the Effects Level, and Knob 4 adjusts the Master Level (volume).
Bypass Mode
The RP255 presets can be bypassed via a true analog bypass circuit for a clean, unprocessed guitar
signal. To bypass the RP255, press both Footswitches simultaneously. The Display reads Bypass
indicating the preset is bypassed. Press either Footswitch to exit Bypass and return the RP255
to the last preset used.
Tuner Mode
TheTuner in the RP255 allows you to quickly tune or check the tuning on your guitar. Enter
Tuner mode by pressing and holding both Footswitches simultaneously. The Display briefly
shows tunerindicating that you are inTuner mode. To begin tuning, play a note on your guitar
(a harmonic at the 12th fret usually works best). The Display shows the note being played.The
Matrix LEDs indicate whether you are sharp or flat. The top 5 red LEDs indicate the note is sharp
and should be tuned down. The bottom 5 red LEDs indicate the note is flat and should be tuned
up. The center green LED indicates the note is in tune. The output is muted inTuner mode. The
Expression Pedal controls the guitar volume while tuning. Exit tuner mode by pressing either
Footswitch.
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2
Display shows
note played
Top LEDs indicate
note is sharp
Green LED indicates
note is in tune
Bottom LEDs indicate
note is flat
InTuner mode, you can change your tuning reference. The default factory setting is A=440 Hz
(displayed as A=440). Rotating Knob 1 selects alternate dropped tunings. Alternate tunings are A
= Ab, A = G, and A = Gb. The display window briefly flashes the current tuning reference.
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3
Tone Library (Knob 1)
In Performance mode, this knob selects a variety of genre-based amp tone defaults ranging from
Blues to Metal to Country. Behind the scenes, the Compressor, Distortion, Amp/Cabinet model,
and EQ are configured to create a specified tone with a single click of this knob. You can further
refine the sound by editing the preset (see Editing/Creating Presets on page 16). Changing between
differentTone Library defaults does not change the Chorus/FX, Delay or Reverb, letting you ex-
periment with different amp styles quickly in the context of the current effect chain.
Effects Library (Knob 2)
In Performance mode, this knob selects a variety of post-amplifier model effect chains (Chorus,
Chorus + Delay, Delay + Reverb, etc.).You can further refine the sound by editing the preset (see
Editing/Creating Presets on page 16). Changing between different Effects Library defaults does not
change the Compressor, Distortion, Amp/Cabinet model, and EQ settings, letting you experiment
with different effect chains quickly in the context of the current amp tone.
Effects Level (Knob 3)
In Performance mode, this knob changes the relative level of the post-amp effects (Chorus/FX,
Delay, and Reverb). This can be thought of as an effects mix control, where turning this knob
clockwise increases the level of these effects and turning it counter-clockwise decreases the level
of these effects.
Master Level (Knob 4)
This knob controls the overall output volume of all of the RP255 (Presets, Drum Machine, and
USB playback).
X-EditTM Editor/Librarian
You can edit your RP255 with your computer, using the X-EditTM Editor/Librarian. Download X-
EditTM, USB drivers, and documentation from www.digitech.com. Open the readme file for detailed
instructions about installing and using this software.
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4
Presets
Presets are named and numbered locations of programmed sounds which reside in the RP255.
Presets are recalled with the Footswitches. The active effects in each preset are indicated by
lighted LEDs in the Effect Matrix. The RP255 comes with 60 User presets (1-60) and 60 Fac-
tory presets (61-120). The User presets are locations where your creations may be stored. The
Factory presets do not allow you to store any changes to them. From the factory, the 60 User
presets are exact duplicates of the 60 Factory presets. This allows you to create your own presets
without losing the sounds that came with the RP255.
TheTone Library knob, Effects Library knob, and Effects Level knob make it easy to
quickly load preset tones, effects, and effects chains.
1. Select a tone
with the
Tone Library knob
2. Select an effect
or effects chain with the effects level with the
Effects Library knob Effects Level knob
3. Adjust the
To learn about storing changes to presets, see page 17.
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5
A Guided Tour of the RP255
Front Panel
5
6
4
3
2
7
8
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6
1. Footswitches
These two Footswitches are used to select presets, access the Tuner, enable the Phrase Looper,
and Bypass the RP255.The Footswitch on the right will select the next preset up, and the
Footswitch on the left will select the next preset down. Pressing both Footswitches together
will bypass the currently selected preset. Pressing and holding the Left Footswitch will enable and
disable the Phrase Looper. Pressing and holding both Footswitches for 2 seconds will access the
Tuner. Press either Footswitch to exit Bypass or Tuner mode.
2. Knobs 1-4
These four knobs perform various functions, depending on which mode is currently active and
what (if anything) is being edited. The functions are listed below:
Tone Library (Knob 1)
1. In Performance mode, this knob selects from a library of preset amp tones.
(See page 47 for a list of preset amp tones.)
2. When editing a preset, this knob changes the Amp or Effect model for the selected row.
3. When editing an Effect row, press this knob to turn on or bypass the effect.
4. When the Drums row is selected, this knob selects the first pattern of each drum pattern
style (Rock, Blues, Jazz, etc.).
Effects Library (Knob 2)
1. In Performance mode, this knob selects from a library of preset effect configurations. (See
page 48 for a list of preset effect configurations.)
2. When editing a preset, this knob modifies the parameter listed in the column
directly above it for the selected Effect row.
3. When the Drums row is selected, this knob selects the different drum patterns available.
4. When the Expression row is selected, this knob selects which parameter is assigned to the
Expression Pedal.
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7
Effects Level (Knob 3)
1. In Performance mode, this knob adjusts the overall level of post amp model effects (Cho-
rus/Mod, Delay, and Reverb).
2. When editing a preset, this knob modifies the parameter listed in the column directly
above it for the selected Effect row.
3. When the Drums row is selected, this knob adjusts the playbackTempo of the drum
machine.
4. When the Expression row is selected, this knob selects the heel value for the Expression
Pedal
Master Level (Knob 4)
1. In Performance mode, this knob adjusts the output level of the RP255.
2. When editing a preset, this knob modifies the parameter listed in the column directly
above it for the selected Effect row.
3. When the Drums row is selected, this knob adjusts the drum machine playback level.
4. When the Expression row is selected, this knob sets the toe value for the Expression
Pedal.
3. Edit buttons
These buttons navigate up and down the matrix, selecting the row of parameters which the
knobs will edit. Press one of these buttons to step through the Effect rows, and return to the
preset name display. See page 16 for more information about editing presets.
4. Matrix
The matrix provides information regarding the current preset and parameter edit functions. In
Performance mode, the LEDs running down the left side of the Matrix provide a visual indication
of which effects are in use for the currently selected preset. While editing a preset, the LEDs
indicate the Effect row currently selected for editing. In Tuner mode, the LEDs indicate whether
the note played is sharp, flat, or in tune.
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8
5. Display
The Display provides information for different functions depending on the mode that has been
selected. In Performance mode, the Display will show the currently selected preset name and
number. In Edit mode, the Display will show the name and value of the parameter being adjusted.
In Tuner mode, the Display will show the note played.
6. Drums
The Drums button is used to turn on and off the RP255’s built-in drum machine. When the
Drums button is turned on, the Drums LED lights and the selected drum pattern plays continu-
ously. Select the Drums row using the Edit buttons and use Knobs 1-4 to change the style,
pattern, tempo, and level of the drum machine. See page 39 for more information about the drum
machine and a list of patterns.
Note: The drum machine cannot be used while the Phrase Looper is active.
7. Store
The Store button is used to save your custom edits to the user presets. See page 17 for more
information about storing presets.
8. Expression Pedal
The Expression Pedal provides real-time control of the RP255’sVolume,Wah, or the assigned
effect parameter. Almost every parameter is available for Expression Pedal control. The
Expression Pedal is equipped with aV-switch that activates or deactivates the Wah feature when
you apply extra pressure to the toe. See page 20 for more information about Wah models; see
page 42 to learn about adjustingV-switch sensitivity and calibrating the Expression Pedal; refer to
pages 45-46 for a list of parameters you can link to the Expression Pedal.
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9
Rear Panel
1
2
3
4
5
6
7
1. Input
Connect your instrument to this high-impedance TS input.
2. Amp / Mixer
This button optimizes the RP255’s outputs for use when plugged into a guitar amp or a mixer/
recording device. When set to Mixer (“In” position), speaker compensation is turned on and the
outputs are optimized for connecting to a mixer, recording device or headphones. When set to
Amp (“Out” position), the outputs are optimized for running directly in to the input of a guitar
amp.
3. Left (Mono) and Right Outputs
Connect the Left (Mono) output to the input of a single amplifier (or mixer input) for mono
operation. Connect the Left and Right outputs to the inputs of 2 amplifiers (or 2 mixer channels)
for stereo operation.
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10
4. Headphones
Connect a pair of stereo headphones to this 1/8" jack. For proper frequency response, the Amp/
Mixer switch should be set to Mixer (“In” position) when using headphones.
Note: The Headphones output can have either a mono or stereo signal, depending on what 1/4"
outputs are connected. If neither (or both) 1/4" outputs are connected, the Headphones output
will be in stereo. If a cable is connected to the Left (Mono) 1/4" output only, the Headphones
output will be in mono.
5. Aux In
Connect the headphone output of an MP3 or CD player using a stereo 1/8" cable to this 1/8"
stereo TRS jack for rehearsing with your favorite pre-recorded material. Adjust the output level
of your playback device and the RP255’s Master Level knob for the proper volume balance.
6. USB Port
The USB port is for connecting the RP255 to a computer and serves two purposes: (1) for use with
the downloadable X-Edit™ Editor/Librarian software, and (2) for streaming audio to and from the
computer when using the included Cubase® LE 4 software. Audio streaming is limited to 2 chan-
nels up and 2 channels down from the computer at 44.1kHz, 16 bit and 24 bit. A utility panel in
the Editor/Librarian controls the direct/playback mix with any recording software the RP255 is con-
nected to. Knobs 2 and 3 also control the direct/playback mix and USB record level when USB is
connected and the Pickup Row is selected.
com.
7. Power Input
Connect only the DigiTech® PS0913B power supply to this jack.
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11
Getting Started
Making Connections
There are several different connection options available with the RP255. Before connecting the
RP255, make sure that the power to your amplifier and the RP255 is turned off. There is no
power switch on the RP255. To turn the RP255 on or off, connect or disconnect the included
PS0913B power supply from the Power Input jack.
Mono Operation - Amplifier
Connect your guitar to the Input of the RP255. Connect a single mono instrument cable from
the Left (Mono) output of the RP255 to the instrument input or effect return on your amplifier.
Set the Amp/Mixer switch to Amp.
Left (Mono)
Output
NOTE: When using a
Guitar Amp Input/Effect Return
Input
guitar amp, it may be best
to connect the guitar to the
Input of the RP255 and the
Output of the RP255 to the
effect return of the amplifier.
Amp/Mixer
switch set to
Amp.
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12
Stereo Operation
For stereo operation connect the guitar to the Input of the RP255. Connect one cable to the
RP255’s Left (Mono) output, and another cable to the RP255’s Right output. Connect one cable
to the input of one amplifier, channel of a mixer, or power amp. Connect the second cable to a
second amplifier, second channel of a mixer, or power amp. If connecting to a mixing console, set
the pan controls of the mixer channels hard left and right in order to retain stereo separation. If
connecting to a mixer, set the Amp/Mixer switch to Mixer. If connecting to two amplifiers, set
the Amp/Mixer switch to Amp.
Stereo Amp Setup
Guitar Amp Input/Effect Returns
NOTE: When using a guitar amp,
it may be best to connect the gui-
tar to the Input of the RP255 and
the Output of the RP255 to the
effect return of the amplifier.
Outputs
Input
Amp/Mixer
switch set to
Amp.
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13
Stereo Mixer Setup
Outputs
Instrument Input
Mixer
1
2
3
4
5
6
Computer Recording Setup
Amp/Mixer switch
set to Mixer
Powered
Studio Monitor
Powered
Studio Monitor
Amp/Mixer switch
set to Mixer
Outputs
USB
Instrument Input
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14
Applying Power
Before applying power to anything, set your amp(s) to a clean tone and set the tone controls to
a flat EQ response (on most amps, this would be 0 or 5 on the tone controls). Then follow the
steps listed below.
1. Turn the amp volume all the way down.
2. Connect the plug of the PS0913B power supply to the power jack on the rear panel of the
RP255.
3. Connect the other end of the PS0913B power supply to an AC outlet. Turn the RP255’s Mas-
ter Level knob (Knob 4) down to “0”.
4. Turn the power of your amplifier(s) to the on position and adjust the volume(s) to a normal
playing level.
5. Gradually increase the RP255’s Master Level knob to achieve the desired volume.
2. Connect PS0913B to power jack
4.Turn amp volume up
3. Connect PS0913B to AC outlet
and turn the RP255’s Master
Level to “0”
5.Turn the RP255’s Master Level to the
desired listening volume
1.Turn amp volume down
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15
SectionTwo - Editing Functions
Editing/Creating Presets
The RP255 is designed to make preset editing and creation easy and intuitive. When creating
your own sound, you must first start with an existing preset. Note that the preset you begin
with doesn’t have to be in the memory location you intend to have it reside, since you can store
it to any User preset location during the store procedure.
The easiest way to start is by using the Tone Library and Effects Library knobs. The Tone
Library knob will let you select from a variety of pre-programmed amp/distortion tones (see
page 47) based on different musical styles. The Effects Library knob will then let you select
from a palette of effects chains (see page 48), from simple delays to full multi-effect signals with
modulation, delay and reverb. Use the Effects Level Knob to easily increase or decrease the
Chorus/FX, Delay and Reverb levels if desired. Using these three controls should get you close
to a sound you are after. From there you can then use the Edit buttons to navigate through the
individual effects for some fine tune edits.
To edit and create a preset:
1. Use the Footswitches to select the preset you wish to edit.
2. If you are trying to find something different from the existing presets, begin by using the Tone
Library, Effects Library and Effects Level knobs to get close to a sound you want.
3. Press the Edit Up/Down buttons to begin selecting the individual Effects rows to edit their
parameters.
4. To bypass or enable an Effect row, press the Tone Library knob.
5. Use Knobs 2-4 to modify the effects’ parameter settings.
6. Select the Pickup row and use Knob 4 to adjust the Preset Level.
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16
Anytime a stored value within a preset is changed, the Store button LED lights up. This indicates
that you need to store the changes. Changing presets, or turning the power off before storing any
changes, erases any changes made and the RP255 will revert to the stored values for the preset.
Storing/Copying/Naming a Preset
Once the preset has been modified to your liking, you may store your settings to any of the
60 User preset locations (presets 1-60). The following steps outline the procedure for storing
changes to a preset or copying a preset to a different location:
1. Press the Store button once. The Store button LED blinks and the first character in the Dis-
play flashes, indicating that you can now name your custom creation.
2. Use Knob 1 to select the alpha-numeric character and Knob 2 to select the next character
location.
1. Press Store;
characters in Display
flash individually
2. Use Knobs to
name Preset
3. Once the desired name is shown in the display, press the Store button again to enter the sec-
ond stage of the storing process. The Display begins to flash.
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17
4. Select the User preset location where your new sound will reside using the Up and Down
Footswitches. The display alternates between showing the preset name and User preset num-
ber about to be overwritten.
3. Press Store again;
Preset number flashes
4. Select destination
with Footswitches
5. Press the Store button again to save the changes.
The procedure for copying one preset to another preset location is the same. Use the Foot-
switches to select the preset that you want to copy, then follow steps 1-4 for storing a preset as
described above. Press either Edit button at any time to abort the Store procedure.
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18
SectionThree - Models and Parameters
About the Models
The RP255 can be thought of as several different “virtual” amplifiers and individual, high-tech
stompboxes in a single programmable package. With stompboxes, the order in which they are
connected affects the overall sound. The RP255 has placed the Amp and Effect models in an order
for optimum results. The following diagram shows the order in which they are connected.
Pickup
Simulator
Amp
Modeling
Chorus/FX
(Whammy)
Cabinet
Model
Wah
Compressor
Distortion
EQ
Volume
Pre
Volume
Post
Chorus/FX
Noise Gate
Delay
Reverb
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19
Model Definitions
Each Amp and Effect model within the RP255 can be programmed to suit your personal taste
and application. Understanding how these components alter the sound, and how each parameter
alters the effect, will help you achieve the sound you are looking for. The following overview of the
RP255’s effects outlines what each effect and parameter does.
Pickup
The Pickup Simulator provides the thick tone of a humbucker pickup to a guitar with single coil
pickups, or the bright, edgy sound of a single coil pickup to a guitar with a humbucker. This gives
you the best of both worlds without having to change guitars during a performance.
Pickup Model - Knob 1 selects the Pickup model to be simulated. Values include: SC>Hb
(gives a single coil pickup the warm tone of a humbucker), and Hb>SC(gives a humbucker
the unique sound of a single coil). Press this knob to turn Pickup modeling on and off.
Preset Level - Knob 4 adjusts the preset’s level.
Wah
Wah is an effect controlled by an Expression Pedal making the guitar sound as if it’s saying “Wah.”
Wah Model - Knob 1 selects the Wah model. Values include: FuLrnG(DigiTech® Full
Range Wah sweeps the entire spectrum of audible frequencies), CrYwah(Cry Wah is a tra-
ditional sounding Wah), and clyde(based on aVox® Clyde McCoyTM Wah). Press this knob
to turn Wah models on and off.
Wah Minimum - Knob 2 adjusts the Wah Pedal Minimum. Ranges from 0(toe up) to 99
(toe down).
Wah Maximum - Knob 3 adjusts the Wah Pedal Maximum. Ranges from 0(toe up) to
99(toe down).
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20
Wah Level - Knob 4 adjusts the Wah Level. Ranges from 0dB to +12dB.
Compressor
A Compressor is used to increase sustain, tighten up guitars, and prevent the signal from clipping
the input of other effects. It sets a maximum boundary for the strength of a signal.
Comp Model - Knob 1 selects one of two Compressor models: DIGCMP(DigiTech®
Compressor) or CSCOMP(Based on a Boss® CS-2 Compressor/Sustainer). Press this knob
to turn the Compressor on and off.
Sustain - Knob 2 adjusts the amount of sustain. Ranges from 0to 99.
Tone/Attack - Knob 3 adjusts the tone for the DigiTech Compressor, or attack for the
Boss CS-2. Ranges from 0to 99.
Compressor Level - Knob 4 adjusts the Level from the Compressor. Ranges from 0to
99.
Attack (X-EditTM only for DigiComp) - Adjusts the amount of time the Compressor
takes to respond to a signal that exceeds the threshold. Ranges from 0to 99.
Distortion
The RP255 models the tones of 13 popular distortion stompboxes, each of which can be tweaked
and modified, just like the real thing.
Distortion Model - Knob 1 selects one of 13 Distortion models. Press this knob to turn
the Distortion on and off.
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21
scream- Based on an Ibanez® TS-9
DSDist - Based on a Boss® DS-1TM Distortion
grunge - DigiTech® Grunge
zone
808
- Based on an IbanezTS-808Tube
Screamer
- Based on a Boss MT-2 Metal Zone®
oddriv- Based on a Guyatone® Overdrive
OD-2
death - DigiTech Death Metal
gonklt - Based on a DOD Gonkulator Ring
Mod
dod250- Based on a DOD® 250
Overdrive/Preamp
fuzz
- Based on an Arbiter® Fuzz FaceTM
rodent - Based on a Pro Co RATTM
mxdist - Based on an MXR® Distortion +
big pi - Based on an Electro-Harmonix® Big
Muff Pi®
DigiTech and DOD are trademarks of Harman International Industries, Inc. Other product names modeled in this product are
trademarks of their respective companies that do not endorse and are not associated or affiliated with DigiTech or Harman
International Industries, Inc.They are trademarks of other manufacturers and were used merely to identify products whose
sounds were reviewed in the creation of this product.
Knobs 2, 3, and 4 have the following functions for the various Distortion models:
Dist.
Model
Knob 2
(Gain)
Knob 3
(Tone)
Knob 4
(Level)
P4
P5
(X-Edit
only)
P6
(X-Edit
only)
(X-EditTM
only)
Drive
Tone
Level
--
--
--
Scream
Overdrive
Drive
Tone
--
Level
Level
Level
Level
--
--
--
--
--
--
--
--
--
--
--
--
808
oddriv
DOD250
rodent
Gain
--
Distortion
Filter
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22
Dist.
Model
Knob 2
(Gain)
Knob 3
(Tone)
Knob 4
(Level)
P4
P5
(X-Edit
only)
P6
(X-Edit
only)
(X-EditTM
only)
Distortion
Gain
--
Tone
Output
Level
Loud
Level
Level
Suck
--
--
--
--
--
mxdist
dsdist
Grunge
zone
--
Grunge
Gain
Face
Butt
Low
High
Heave
--
--
Mid Level
Mid
Mid Freq
High
--
Low
--
--
death
Gunk
(Dist Gain)
Smear (Ring
Mod Level)
--
gonklt
(Dist Level) (Output Lvl)
Fuzz
--
Volume
Volume
--
--
--
--
--
--
fuzz
Sustain
Tone
big pi
Amplifier
Amp Modeling is a technology which applies the tone of several popular modern and vintage
amps. Amp Modeling also includes an acoustic guitar simulation.
Amp Model - Knob 1 selects one of the classic, modern, and DigiTech custom Amp mod-
els. Press this knob to turn Amp and Cabinet modeling on and off. Note that when you
select an Amp model, the default Cabinet model is automatically selected. You can, however,
change the Cabinet model after selecting an Amp model.
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23
57chmp- Based on a‘57 Fender® Tweed Champ® VXac15- Based on a ‘62Vox® AC15
57dlux- Based on a ‘57 FenderTweed Deluxe topbst - Based on a ‘63Vox AC30Top Boost
59BMAn- Based on a ‘59 FenderTweed
hiwtag - Based on a ‘69 Hiwatt® Custom 100
Bassman®
DR103
65twin - Based on a ‘65 Fender BlackfaceTwin mark2c- Based on an ‘81 Mesa Boogie®
Reverb®
Mark II C
65dlxr - Based on a ‘65 Fender Blackface
rectfr - Based on an ‘01 Mesa Boogie Dual
Rectifier
Deluxe Reverb®
68plex- Based on a ‘68 Marshall® 100Watt
Super Lead (plexi)
match - Based on a ‘96 MatchlessTM HC30
soldno- Soldano SLO-100
digslo- DigiTech® Solo
digmtl- DigiTech Metal
digbrt - DigiTech Bright
digcln - DigiTech Clean
diggan - DigiTech Gain
45 jtm- Marshall® ‘65 JTM-45 head
jmppnl- Marshall Super Lead
(“jumped” channels)
77mstr - Based on a ‘77 Marshall Master
Volume
800jcm- Based on an ‘83 Marshall JCM800
900jcm- Based on a ‘93 Marshall JCM900
ACdred- Dreadnaught acoustic
direct - No amp model
DigiTech is a trademark of Harman International Industries, Inc. Other product names modeled in this product are trademarks
of their respective companies that do not endorse and are not associated or affiliated with DigiTech or Harman International
Industries, Inc.They are trademarks of other manufacturers and were used merely to identify products whose sounds were
reviewed in the creation of this product.
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24
Cabinet - Knob 2 selects the speaker Cabinet model.
chmp18- Based on a 1x8 ‘57 Fender® Tweed
Grn412- Based on a 4x12 Marshall 1969 Slant
Champ®
w/ Celestion 25W Greenbacks
vtg412- Based on a 4x12 Johnson® Straight w/
CelestionVintage 30’s
dlx112- Based on a 1x12 ‘57 FenderTweed
Deluxe®
twn212- Based on a 2x12 ‘65 Fender Blackface digslo- 4x12 DigiTech® Solo
Twin Reverb®
digbrt - 2x12 DigiTech Bright
brt212- Based on a 2x12 ‘63Vox® AC30Top digmtl- 4x12 DigiTech Metal
Boost w/ Jensen® Blue Backs
bmn410- Based on a 4x10 ‘59 FenderTweed
Bassman®
digrck- 4x12 DigiTech Rock
digalt - 4x12 DigiTech Alt Rock
digvtg- 4x12 DigiTechVintage
direct - No cabinet model
cls412- Based on a 4x12 Marshall® 1969
Straight w/ Celestion® G12-T70
DigiTech and Johnson Amplification are trademarks of Harman International Industries, Inc. Other product names modeled in
this product are trademarks of their respective companies that do not endorse and are not associated or affiliated with Digi-
Tech or Harman International Industries, Inc.They are trademarks of other manufacturers and were used merely to identify
products whose sounds were reviewed in the creation of this product.
Amp Gain - Knob 3 adjusts the Gain (distortion) for the selected Amp model (not avail-
able for Acoustic). The Gain parameter ranges from 0to 99.
Amp Level - Knob 4 adjusts the Level (volume) of the selected Amp model. The Level
parameter ranges from 0to 99.
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25
EQ
The RP255’s EQ helps further shape your tone with Bass, Midrange, andTreble controls. To help
get you started, there are four preset EQ curves: Mid Boost (midbst), Scoop (ScooP), Bright
(Bright), andWarm (WarM) that can be selected using Knob 1. Bass, Midrange, andTreble
parameters range from -12dB to +12dB.
EQ Model - Knob 1 selects between 4 different EQ modes (Mid Boost, Scoop, Bright, and
Warm), each with different frequency centers for Mid and Treble. Pressing this knob turns
the EQ on and off.
Bass - Knob 2 adjusts the amount of low end level (Bass).
Mid - Knob 3 adjusts the midrange level.
Mid Freq (X-EditTM only) - This parameter selects the frequency that the Mid parameter
adjusts. Ranges from 300 Hz to 5000 Hz.
Treb - Knob 4 adjusts the high end level (Treble).
Treb Freq (X-Edit only) - This parameter selects the frequency that the Treb parameter
adjusts. Ranges from 500 Hz to 8000 Hz.
Noise Gate
A Noise Gate is designed to eliminate noise while you are not playing, or provide an auto volume
swell effect.
Gate Model - Knob 1 selects between the DigiTech® noise gate or the volume swell effect.
Values include: gate (Selects the noise gate) and swell(Selects the volume swell effect.)
Press this knob to turn the noise gate on and off.
Threshold/Swell Sensitivity - Knob 2 sets the signal strength (Threshold) required to
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open or close the Noise Gate, or the Swell Sensitivity for the Auto Swell. Both parameters
26
range from 0(opens easily/high sensitivity) to 99(requiring strong signals to open/high sen-
sitivity).
Attack Time - Knob 3 sets the attack time. Ranges from 0(shorter attack time) to 99
(longer attack time).
Release - Knob 4 sets the Release parameter. Ranges from 0to 99.
Attenuation (X-EditTM only) - Sets the Attenuation parameter. Ranges from 0to 99.
Chorus/FX
The Chorus/FX row in the RP255 is a multi-function module, allowing you to select Effect models
such as Chorus, Flanger, Phaser, Tremolo, Panner, Vibrato, Rotary Speaker, YaYa™, AutoYa™,
SynthTalk™, Envelope Filter (auto wah), Detune, Pitch Shift, andWhammy™ effects. When the
Chorus/FX row is selected, Knob 1 is used to choose the Effect model. Press this knob to turn
these Effect models on and off. Only one of the effects in this row can be used at a time. After
selecting the type of effect in this module, Knobs 2-4 can then be used to adjust the individual
parameters associated with the selected effect. The following list describes each Effect model and
its parameters in more detail:
Chorus
A Chorus adds a short delay to your signal. The delayed signal is modulated in and out of tune
and then mixed back with the original signal to create a thicker sound. The RP255 includes the
following Chorus Effect models: Ce CHS(based on the classic Boss® CE-2 Chorus), CHOruS
(DigiTech®’s Dual Chorus), and MCHOrS(DigiTech’s famous Multi Chorus®).
Speed - Knob 2 adjusts the rate (Speed) of the modulation. Ranges from 0to 99.
Depth - Knob 3 adjusts the Depth of the modulation. Ranges from 0to 99.
Level - Knob 4 controls the level of the effect (DigiTech Chorus models only). Ranges
from 0to 99.
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Waveform (X-EditTM only for DigiTech Chorus models) - Selects a waveform:
triang, Sine, or Square.
Flanger
A Flanger uses the same principle as a Chorus but uses a shorter delay time and adds regeneration
(or repeats) to the modulating delay. This results in an exaggerated up and down sweeping motion
to the effect. The RP255 includes the following Flanger Effect models: fLangr (the DigiTech
Flanger), and mxFLgr (based on an MXR® Flanger).
Knobs 2, 3, and 4 have the following functions for the Flanger models:
Flanger
Model
Knob 2
(Speed)
Knob 3
(Depth)
Knob 4
(Regen)
P5
P6
(X-Edit
only)
(X-EditTM
only)
Speed
Speed
Depth
Width
Regen
Regen
Waveform
Manual
Level
--
flangr
mxflgr
Phaser (PHaser)
A phaser splits the incoming signal, and then changes the phasing of the signal. This signal is then
taken in and out of phase and mixed back in with the original signal. As the phasing changes, differ-
ent frequencies get canceled resulting in a warm sort of twisting sound.
Knobs 2, 3, and 4 have the following functions for the two Phaser models:
Speed - Knob 2 adjusts the rate (Speed) of the modulation. Ranges from 0to 99.
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28
Depth - Knob 3 adjusts the Depth of the modulation. Ranges from 0to 99.
Regeneration - Knob 4 controls the regeneration of the effect. Ranges from 0to 99.
Waveform (X-EditTM only) - Selects a waveform: triang, Sine, or Square.
Level (X-Edit only) - Controls the level of the effect. Ranges from 0to 99.
Vibrato (viBrat)
AVibrato effect modulates the pitch of the incoming signal at an even rate.
Speed - Knob 2 adjusts the rate (Speed) at which the pitch modulates. Ranges from 0to
99.
Depth - Knob 3 adjusts the intensity (Depth) of the modulating pitch. Ranges from 0to
99.
Rotary Speaker (rOtArY)
Rotary Speaker is an emulation of a device that included a spinning horn and woofer. The rotation
of these two speakers produced an interesting combination of the sound panning from side to
side. This produced a slight pitch change due to the speed of the sound coming towards, and then
going away from the listener.
Speed- Knob 2 adjusts the rate (Speed) of the spinning speakers. Ranges from 0to 99.
Intensity - Knob 3 controls the intensity of the effect. Ranges from 0to 99.
Doppler - Knob 4 controls the Pitch Shift effect that is the ratio between the horn and the
rotor positions. Ranges from 0to 99.
Crossover (X-EditTM only)- Selects the crossover frequency between the horn and rotor.
Ranges from 0(200 Hz) to 99(1600 Hz).
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29
VibroPan (vibpan)
A vibrato is an effect that modulates the pitch of the incoming signal.This will take the whole signal
slightly in and out of tune at a steady pace.TheVibroPan also incorporates an automatic panner
with the vibrato effect that creates a lush chorus-like sound.
Speed - Knob 2 adjusts how fast the signal is being modulated.
Depth - Knob 3 adjusts the amount of pitch change.
Vibrato/Pan- Knob 4 adjusts the amount of panning incorporated with the vibrato effect.
When the “Vib” control is at “0”, this effect is a standard vibrato. As the Level parameter is
turned up, the phase difference of the vibrato signal sent to the two channels is changed until
a full stereo image is obtained at “99”.
Waveform (X-EditTM only) - Selects a waveform: triang, Sine, or Square.
Tremolo (trMoLO)
ATremolo effect modulates the volume of the signal at an even rate.
Speed - Knob 2 adjusts the rate (Speed) at which the volume modulates. Ranges from 0to
99.
Depth - Knob 3 adjusts the intensity (Depth) of the modulating volume. Ranges from 0to
99.
Waveform - Knob 4 selects a waveform: triang, Sine, or Square.
Panner (PAnner)
An Auto Panner modulates the sound from left to right at an even rate.
Speed - Knob 2 adjusts the rate (Speed) at which the signal pans from side to side. Ranges
from 0to 99.
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30
Depth - Knob 3 adjusts the intensity (Depth) of the changing pan. Ranges from 0to 99.
Waveform - Knob 4 selects a waveform: triang, Sine, or Square.
Envelope Filter (envlOp)
The Envelope Filter is a dynamicWah effect that alters your sound based upon how hard you play.
Sensitivity - Knob 2 adjusts the sensitivity or the input signal required to trigger the Wah
effect. Ranges from 0to 99.
Range - Knob 3 controls the range of the Envelope effect. Ranges from 0to 99.
AutoYa™ (AutOYA)
An AutoYa combines the characteristics of aWah and a Flanger together creating an almost human
vowel characteristic as if the guitar were saying “Yah.”The AutoYa™ automatically provides this
animation to the sound at an even rate.
Speed - Knob 2 adjusts the speed of the AutoYa sweep. Ranges from 0to 99.
Intensity - Knob 3 adjusts the intensity of the AutoYa effect. Ranges from 0to 99.
Range - Knob 4 adjusts the throaty quality of the AutoYa effect. Ranges from 0to 49.
YaYa™ (yaya)
TheYaYa is another effect exclusive to DigiTech® products. Like the AutoYa™, it combines the
characteristics of a wah and a flanger together providing a unique talk box type of effect, but is
controlled by the Expression Pedal.
Pedal - Knob 2 adjusts theYa pedal position. Ranges from 0to 99.
Intensity - Knob 3 adjusts the intensity of theYaYa effect. Ranges from 0to 99.
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Range - Knob 4 adjusts the throaty quality of theYaYa effect. Ranges from 0to 49.
Step Filter (stpflt)
The Step Filter is like an automatic “random wah” with a square waveform.
Speed - Knob 2 adjusts the speed of the Wah effect. Ranges from 0to 99.
Intensity - Knob 3 controls the intensity of the Wah effect. Ranges from 0to 99.
DigiTech Whammy™ (wHammy)
The DigiTechWhammyTM is an effect that uses an Expression Pedal to bend the pitch of the in-
coming signal, or add a bendable harmony with the original signal. As the Pedal is moved, the note
bends either up or down. When DigiTechWhammy is selected, it is automatically placed before
the Amp modeling as shown in the block diagram on page 19.
Shift Amount - Knob 2 selects the interval and direction of the pitch bend. Choices are
as follows:
WhammyTM (no Dry Signal)
oct up (1 octave above)
2octup (2 octaves above)
2nd dn (a second below)
rv2ndn (a second below reversed pedal action)
4th dn (a fourth below)
oct dn (an octave below)
2octdn (2 octaves below)
DIVeBM (Dive Bomb)
Harmony Bends (Dry Signal Added)
m3>Mj3 (a minor third to a Major third)
2ndmj3 (a second above to a Major third above)
3rd4th (a third above to a fourth above)
4th5th (a fourth above to a fifth above)
5thoct (a fifth above to an octave above)
hoctup (one octave above)
hoctdn (one octave down)
octu>d (octave up/down)
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32
Pedal Position - Knob 3 provides a manual control of the Whammy pedal position.
Ranges from 0to 99.
Mix - Knob 4 adjusts the Whammy mix. Ranges from 0to 99.
Pitch Shift (PitCH)
A Pitch Shifter copies the incoming signal, then shifts the pitch of the copy to a different note.The
shifted note is then mixed back with the original signal, sounding as if two guitars were playing
different notes.
Shift Amount - Knob 2 selects the interval of the shifted pitch. Ranges from -24(2
octaves below) to 24 (2 octaves above).
Mix - Knob 4 controls the mix level of the shifted pitch. Ranges from 0to 99.
Detune (Detune)
A Detuner makes a copy of your incoming signal, takes the copied signal slightly out of tune from
the original, then mixes the two signals together. The result is a doubling type of effect as if two
guitars were playing the same part together.
Shift Amount - Knob 2 adjusts the amount of pitch difference applied to the copied signal.
Ranges from -24to 24cents.
Level - Knob 4 controls the mix of the detuned note. Ranges from 0to 99.
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33
Harmony Pitch Shifting
Harmony Pitch Shifting makes a copy of the incoming signal, and then changes the pitch of the
copied note to a diatonically correct interval specified by the Amount parameter. A Harmony
Pitch Shifter sharpens or flattens the shifted pitch in order to keep the specified interval within
the selected key and scale creating a true harmony.
Shift - Knob 2 selects the amount or harmony interval for the Intelligent Pitch Shifter. Interval
choices include:
OCt Dn (octave down)
7tH Dn (a seventh below)
6tH Dn (a sixth below)
5tH Dn (a fifth below)
4tH Dn (a fourth below)
3rD Dn (a third below)
2nD Dn (a second below)
2nD uP (a second above)
3rD uP (a third above)
4tH uP (a fourth above)
5tH uP (a fifth above)
6tH uP (a sixth above)
7tH uP (a seventh above)
OCt uP (an octave above)
Key - Knob 3 selects the musical key that the Harmony Pitch Shifting uses. Key choices
range from the Key of E (KeY e) through the Key of Eb (KeY e∫).
Scale - Knob 4 selects the scale the Harmony Pitch Shifting will use. Scale choices include:
Major (MAJOr), Minor (MInOr), Dorian (DOrIAn), Mixolydian (MIXLYd), Lydian (LYD-
IAn), and Harmonic Minor (HMInor).
Level (X-EditTM only) - Adjusts the Harmony Pitch Shifting Level (IPSLVL) of all the
pitch-altering effects in this module. Ranges from 0to 99.
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34
Delay
Delay is an effect that will record a portion of the incoming signal, and then play it back a short
time later. The recording can repeat just once or several times.
Delay Model - Knob 1 selects one of the 5 different Delay models. Values include:
algdly(DigiTech® Analog Delay), digdly(DigiTech Digital Delay), moddly(DigiTech
Modulated Delay), pngdly(DigiTech Pong Delay), and tapdly(DigiTech Tape Delay). Press
this knob to turn the Delay models on and off.
Knobs 2, 3, and 4 have the following functions for the various Delay models:
Delay
Model
Knob 2
(Time)
Knob 3
(Repeats)
Knob 4
(Level)
P4
P5
(X-Edit
only)
(X-EditTM
only)
Time
Repeats
Delay Level
--
--
algdly
Time
Time
Time
Time
Repeats
Repeats
Repeats
Repeats
Level
Delay Level
Delay Level
Level
DuckThresh
Depth
Duck Level
--
digdly
moddly
pngdly
tapdly
DuckThresh
Wow
Duck Level
Flutter
Time - Knob 2 adjusts the length of time between repeats. Ranges from 10ms to 5sec-
onds.
Repeats - Knob 3 adjusts the number of times the delayed signal will repeat. Ranges from
0to 99/rpthld(Repeat Hold).
Delay Level / Level - Knob 4 adjusts the volume of the delayed signal. Ranges from 0to
99.
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35
DuckThresh (X-EditTM only) - Adjusts the level the input signal must reach before the
delayed signal is attenuated. Ranges from 0to 99.
Depth (X-Edit only) - Adjusts the intensity of the modulation (chorusing) in the delay
repeats. Ranges from 0to 99.
Wow (X-Edit only) - Adjusts low frequency modulation (below about 6 Hz) that would be
caused by tape speed variation. Ranges from 0to 99.
Duck Level (X-Edit only) - Adjusts the amount of attenuation applied to the delayed sig-
nal. Ranges from 0to 99.
Flutter (X-Edit only) - Adjusts a higher frequency modulation (from about 6 to 30 Hz)
that would be caused by tape speed variation. Ranges from 0to 99.
Reverb
Using reverb in recorded program material gives the listener a sense that the material is being per-
formed in an actual room or hall. It is this similarity to actual acoustic spaces that makes reverber-
ation a useful tool in recorded music.The RP255 features genuine Lexicon® reverbs, whose rich,
lush effects have been heard in countless songs, soundtracks, and live performances for decades.
Reverb Model
Knob 1 selects the Reverb model or acoustic space. Press this knob to turn the Reverb
models on and off. The following models are available:
twinrv- Based on a Fender®
Twin Reverb
lexrom - Lexicon Room
lexhal - Lexicon Hall
emtplt - Based on an
EMT240 Plate
lexamb- Lexicon® Ambience
lexstd - Lexicon Studio
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36
Reverb
Model
Knob 2
(Decay)
Knob 3
(Liveliness)
Knob 4
(Reverb
Level)
P4
(X-EditTM
only)
--
--
Reverb
--
twinrv
Decay
Decay
Decay
Decay
Decay
Liveliness
Liveliness
Liveliness
Liveliness
Liveliness
Reverb Level
Reverb Level
Reverb Level
Reverb Level
Reverb Level
Predelay
Predelay
Predelay
Predelay
Predelay
lexamb
lexstd
lexrom
lexhal
emtplt
Decay - Knob 2 adjusts the length of time the reverb is audible. Ranges from 0to 99.
Liveliness - Knob 3 adjusts the amount of high frequency content in the reverberation tails.
Ranges from 0to 99.
Reverb / Reverb Level - Knob 4 adjusts the volume of the reverb signal. Ranges from 0to
99.
Predelay (X-EditTM only) - Adjusts the amount of time it takes for the initial sound to
reach the first reflective surface in the simulated environment. Ranges from 0to 15.
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37
Section Four - Other Functions
Phrase Looper
The RP255 features a built-in 20 second Phrase Looper for creating on the fly performance loops
of the music you play. The Phrase Looper can be accessed any time during performance and used
with any of the RP’s presets.
To use the Phrase Looper, follow these steps:
1. Press and hold the left Down Footswitch for 2 seconds until LOOPerappears in the dis-
play. The Looper LED will also light in the matrix indicating the Looper is active.
2. Arm the Phrase Looper to record by pressing the Down Footswitch again. The display will
read ArMeDmeaning it is ready for you to start playing (You can also start recording immedi-
ately when this footswitch is pressed).
3. Begin playing a phrase on the guitar. The Phrase Looper will begin recording anything that is
played. The display will read reCorD.
4. Once you are ready to set the loop point, press any footswitch. The display will briefly read
PLAYand the recorded phrase will now begin playing back.
5. To add an overdub to the looped phrase, press and hold the left Down Footswitch. The
display will read OVrDuB. While holding the footswitch, begin playing the overdub phrase to
be added to the loop. When the Down Footswitch is released, the display will briefly flash
PLAYand the looped phrase will continue with the newly added overdub phrase added.
6. To stop the Phrase Looper, press and release the left Down Footswitch quickly. You can
resume playback by pressing this footswitch again.
7. To clear a recorded loop, stop the loop playback first as outlined in step 6 and then press and
hold left Down Footswitch for 2 seconds until the display read CLeArD.
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38
To exit the Phrase Looper mode, press and hold left Down Footswitch for 4 seconds until the
display reads LPeXIt.
While the Phrase Looper is active, the left Down Footswitch cannot be used to select presets.
The right Up Footswitch can still be used navigate through all of the RP’s presets. To select the
next preset up, press the right Up Footswitch quickly to advance to the next preset. To select a
previous preset, press and hold the right Up Footswitch and the presets will slowly scroll back-
wards until the footswitch is released.
Note:While the Phrase Looper feature is active, the RP’s Drum Machine is not available.
Drum Machine
The RP255 includes a built-in drum machine loaded with 60 useful patterns and 5 metronome set-
tings that are easily accessible at the touch of a button (the Drums button, specifically). Pressing
the Drums button will enable the drum machine and start playback of the selected drum pattern
(except when in Store or Bypass mode). When the Drums row is selected (using the Edit but-
tons), Knob 1 scrolls through the first patterns for each drum style, Knob 2 scrolls through all
the drum patterns, Knob 3 adjusts theTempo of the drum pattern and Knob 4 adjusts the Level
of the drum pattern. Press the Drums button again to stop playback of the drum loop.
Drum Pattern List
Beats (8th beat) 1-5
Beats (16th beat) 6-8
jazz
1-4
1-4
1-4
hiphp
world
rock
1-8
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39
hrock
metal
blues
groov
cntry
1-8
1-8
1-8
1-4
1-4
Met
Met
Met
Met
met
4/4
3/4
5/8
7/8
mtrnom
Aux Input
The Aux Input allows you to connect an MP3 or CD player to the RP255 and jam with your favor-
ite artists. The signal from your MP3 or CD player is output through the left, right, and headphone
outputs of the RP255. To use the Aux Input, connect the headphone output of your MP3 or CD
player to the Aux Input on the rear panel of the RP255 using an 1/8" stereo cable, and press
play on your MP3 or CD player. Use the playing device’s volume control and the RP255’s Master
Level knob to balance the levels.
Expression Pedal
The Expression Pedal on the RP255 can be linked to control the RP255’sVolume, Wah, Wham-
my™,YaYa™, or almost any of the RP255’s other parameters in real time with your foot. When
a parameter has been linked to the Expression Pedal, a minimum (heel) and maximum (toe) value
can also be specified. Apply extra pressure to the toe of the Expression Pedal to activate the
V-switch, and the Expression Pedal switches between the linked parameter and theWah. The
procedure for linking a parameter to the Expression Pedal is as follows:
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40
1. Press either Edit button until the Expression row has been selected (indicated by the LED light-
ing on the Expression row). eXPappears in the display.
2. Rotate Knob 2 until the desired parameter appears in the Display. See page 45 for a complete
list of parameters that can be linked to the Expression Pedal.
3. Rotate Knob 3 to select the minimum (heel) value the assigned parameter will reach with the
Expression Pedal in the toe up position.
4. Rotate Knob 4 to select the maximum (toe) value the assigned parameter will reach with the
Expression Pedal in the toe down position.
5. Store your Expression Pedal assignment to your preset. See page 17 for more information on
the storing procedure.
Factory Reset
This function resets the RP255 to its original factory settings. This procedure erases all custom
User presets, and recalibrates the Expression Pedal.
ATTENTION: Performing this function will erase all user-programmed data. All
such data will be lost forever! Be sure you want to erase the memory and start fresh
before continuing with this procedure.
The procedure for performing a Factory Reset is as follows:
1. Press and hold the Store button while powering up the RP255.
2. When the display prompts you with FACrSt, release the Store button, which is now flashing.
3. Press and hold the flashing Store button for 3 seconds until rStOrDappears in the display and
release (The Factory Reset procedure takes approximately 20 seconds). The Expression Pedal
calibration procedure now commences.
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41
Expression Pedal Calibration
The Expression Pedal on the RP255 needs to be recalibrated for use after a factory reset has been
performed. This calibration procedure is automatically entered after a factory reset procedure.
(You can also initiate the calibration procedure by pressing and holding both Footswitches for
approximately 5 seconds.) In the event the Pedal’s calibration fails, or if the Pedal does not function
properly, it can be re-calibrated using the Pedal Calibration procedure. This will not erase the
User presets.The procedure for Calibrating the Expression Pedal is as follows:
1. Press and hold the Up/Down Footswitches until PDLCALappears in the display (BYPASS
and tunerwill be displayed before PDLCALis accessed)
2. When the Display prompts you with tOe Dn, rock the Expression Pedal forward (toe down)
and press either Footswitch.
3. When the Display prompts you with tOe uP, rock the Expression Pedal back (toe up) and
press either Footswitch.
4. The Display now prompts you to calibrate theV-Switch sensitivity (VSwxxx), where XXXis the
currentV-Switch threshold. Rock the Expression Pedal forward and press firmly on the toe
once to turn theV-Switch on (wah On), and again to turn theV-Switch off (wahOFF).
5. If theV-Switch is too sensitive, press the right Up Footswitch to raise the threshold (range is
0-200). Keep testing theV-Switch sensitivity and adjust the threshold until it only engages when
you want it to (too sensitive a setting will lead to theV-Switch falsely triggering on or off when
using the Expression Pedal).
6. When theV-Switch sensitivity is set to your satisfaction, press both Up/Down Footswitches
simultaneously to exit.
Note: If the Display shows errOr, an error has occurred and steps 2 through 5 should
be repeated.
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42
Section 5 - Appendix
Specifications
General Specifications
A/D/A Converter: 24-bit high performance audio
Sampling Frequency: 44.1 kHz
DSP Section:AudioDNA2™ DSP Processor
Simultaneous Effects: 11
Preset Memory: 60 User Presets (1-60) / 60 Factory Presets (61-120)
Phrase Looper: 20 seconds of record time
Drum Machine: 60 Patterns
Dimensions: 14.5” Length x 8.75” Width x 2.5” Height
Unit Weight: 4.9 lbs.
Analog Input Connections:
Guitar Input: 1/4” Unbalanced (TS)
Input Impedance: 500k Ohms
Aux Input: 1/8” Stereo (TRS)
Analog Output Connections:
Left/Right Outputs: 1/4” Impedance Unbalanced
Left/Right Output Impedance: 500 Ohms per side
Maximum Output: +10dBu
Headphones: 1/8” Stereo (TRS) – 13.6mW per channel @ 50 Ohms
Digital Connections:
Universal Serial Bus (USB):Type B, supports USB2.0 Full Speed
RP255 USB Recording Specifications:
Sample Rate: 44.1 kHz
Bit depth: supports 16-bit or 24-bit (depends on setup in Recording Software)
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43
Power Requirements:
US and Canada: 120VAC, 60 Hz Adapter: PS0913B-120
Japan: 100VAC, 50/60 Hz Adapter: PS0913B -100
Europe: 230VAC, 50 Hz Adapter: PS0913B -230
UK: 240VAC, 50 Hz Adapter: PS0913B -240
Windows® Software Requirements
Vista Home/Premium, XP Home/Professional (SP2 installed, .NET 2.0 installed*)
Pentium®/Athlon™ 1.4GHz or later 512MB RAM (1GB RAM recommended)
180MB hard disk space for application
DVD-ROM drive
USB Port
Internet connection required for Cubase activation
*.NET 2.0 will be installed during installation of X-Edit software if required on XP systems
Mac® Software Requirements
OS 10.4.x or later
PowerPC G4/G5 1GHz or later
512MB RAM (1GB RAM recommended)
180MB hard disk space for application
DVD-ROM drive
USB Port
Internet connection required for Cubase activation
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44
Expression Pedal - Assignable Parameters
Disclaimer: DigiTech, Lexicon,Whammy,YaYa,AutoYa, and Johnson Amplification are trademarks of Harman International Indus-
tries, Inc. Other product names modeled in this product are trademarks of their respective companies that do not endorse and
are not associated or affiliated with DigiTech or Harman International Industries, Inc.They are trademarks of other manufactur-
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ers and were used merely to identify products whose sounds were reviewed in the creation of this product.
45
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46
Tone Library
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47
Effects Library
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48
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49
DigiTech®
8760 South Sandy Parkway
Sandy, Utah 84070
PH (801) 566-8800
FAX (801) 566-7005
Printed in China
RP255 Owner’s Manual 18-6411V
©2009 Harman International Industries, Incorporated, all rights reserved.
DigiTech and the RP255 are trademarks of the Harman Music Group. Other product names
modeled in this product are trademarks of their respective companies that do not endorse
and are not associated or affiliated with DigiTech.They are trademarks of other manu-
facturers and were used merely to identify products whose sounds were reviewed in the
creation of this product.
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