digi-tech BP355 User manual

01
Bass Multi-Effects
Processor
Owner’s Manual
Professional audio equipment

Warranty
We at DigiTech® are very proud of our products and back up each one we sell with the following warranty:
1. Please register online at digitech.com within ten days of purchase to validate this warranty.This
warranty is valid only in the United States.
2. DigiTech warrants this product, when purchased new from an authorized U.S. DigiTech dealer and
used solely within the U.S., to be free from defects in materials and workmanship under normal use
and service.This warranty is valid to the original purchaser only and is non-transferable.
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 DigiTech WITH RETURN AUTHORIZATION,
where all parts and labor will be covered up to a period of one year. A Return Authorization number
may be obtained by contacting DigiTech.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 responsibility of the consumer.A copy of the original
purchase receipt must be provided for any warranty service.
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 since this version of the manual was completed.The information contained in this version of the
owner’s manual supersedes all previous versions.
Technical Support & Service
If you require technical support, contact DigiTech Technical Support. Be prepared to accurately describe the
problem. Know the serial number of your device – this is printed on a sticker attached to the chassis. If you
have not already taken the time to register your product, please do so now at digitech.com.
Before you return a product to the factory for service, we recommend you refer to this manual. Make sure
you have correctly followed installation steps and operating procedures. For further technical assistance or
service, please contact our Technical Support Department at [phone] or visit digitech.com. If you
need to return a product to the factory for service, you MUST first contact Technical Support to obtain a
Return Authorization Number.
NO RETURNED PRODUCTS WILL BE ACCEPTED AT THE FACTORY WITHOUT A
RETURN AUTHORIZATION NUMBER.
Please refer to the Warranty information, which extends to the first end-user.After expiration of the
warranty, a reasonable charge will be made for parts, labor, and packing if you choose to use the factory
service facility. In all cases, you are responsible for transportation charges to the factory. If the product is
still under warranty, DigiTech will pay the return shipping.
Use the original packing material if it is available. Mark the package with the name of the shipper and with
these words in red: DELICATE INSTRUMENT, FRAGILE! Insure the package properly. Ship prepaid, not
collect. Do not ship parcel post.

Table of Contents
Section 1 - Introduction ................................ 1
Getting Acquainted........................................................1
About the BP355 ........................................................... 1
Performance Mode...................................................1
Stompbox Footswitch Mode..................................1
Bypass Mode .............................................................1
Tuner Mode................................................................ 2
Tone Library (Knob 1)............................................. 2
Effects Library (Knob 2)..........................................2
Effects Level (Knob 3) .............................................2
Amp Gain (Knob 4) .................................................2
Amp Level (Knob 5).................................................2
Master Level (Knob 6).............................................2
X-EditTM Editor/Librarian ........................................3
Presets.........................................................................3
Create Your Sound in Three Easy Steps ...................3
A Guided Tour of the BP355.......................................4
Front Panel .................................................................4
Rear Panel...................................................................7
Section 2 - Getting Started........................... 8
Making Connections......................................................8
Mono Operation - Amplifier ..................................8
Stereo Operation .....................................................8
Stereo Amp Setup.....................................................8
Stereo Mixer Setup ..................................................9
Computer Recording Setup ..................................9
Amp/Mixer Setup ....................................................9
Applying Power ...........................................................10
Section 3 - Editing Functions...................... 11
Editing/Creating Presets .............................................11
Storing/Copying/Naming a Preset............................12
Section 4 - Models and Parameters ........... 13
About the Models........................................................13
Model Definitions ........................................................13
Fretless/Wah ............................................................13
Compressor ............................................................14
Distortion.................................................................14
Amplifier ...................................................................16
EQ ..............................................................................17
Noise Gate/Auto Swell .........................................17
Chorus/FX................................................................18
Delay .........................................................................25
Reverb ......................................................................26
Section 5 - Other Functions ....................... 27
Phrase Looper ..............................................................27
Drum Machine..............................................................27
Aux Input.......................................................................28
Expression Pedal ..........................................................28
LFOs................................................................................29
Factory Reset................................................................29
Expression Pedal Calibration ....................................30
Section 6 - Appendix.................................... 31
Specifications.................................................................31
Expression Pedal - Assignable Parameters.............32
Tone Library..................................................................34
Effects Library...............................................................34

1
Section 1 - Introduction
Getting Acquainted
Congratulations on your purchase of the BP355. You now have an incredibly advanced modeling bass
processor that can keep up with your creative impulses and even increase them. Armed with DigiTech®’s
patented AudioDNA2®custom audio DSP chip, the BP355 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 and a built-in drum machine, and you have the BP355: the key to unlock
your creative potential.
About the BP355
Performance Mode
When you first apply power to the BP355, it powers up in Performance mode. Performance mode provides
access to all of the presets within the BP355 via the Up and Down Footswitches. The Amp A/B
Footswitch toggles between two amp channels for the selected preset. Knob 1 selects a tone from the
Tone Library, Knob 2 selects an effects chain from the Effects Library, Knob 3 adjusts the Effects Level,
and Knob 4 adjusts the Amp Gain, Knob 5 adjusts the Amp Level, and Knob 6 adjusts the Master Level
(volume).
Stompbox Footswitch Mode
The BP355 includes a very convenient Stompbox Footswitch mode, where the Up, Down, and Amp A-B
footswitches function as on/off switches for the Distortion, Chorus/FX and Delay effects. To enable
Stompbox Footswitch mode, press the Up and Amp A/B Footswitches simultaneously. The Display will
read STOMP briefly indicating Stompbox footswitch mode has been enabled. The Down, Up, and Amp
A/B Footswitches will now turn Distortion, Chorus/FX, and Delay effects respectively on and off in the
current preset.
NOTE: While Stompbox footswitch mode is active, you cannot navigate through the BP355’s presets, nor
can you change the Amp A/B channels in the current preset.
To exit Stompbox footswitch mode and return to Preset footswitch mode, press the Up and Amp A/B
Footswitches simultaneously again. The Display will read PRESET briefly indicating Preset footswitch
mode is now active again.
Bypass Mode
The BP355 presets can be bypassed via an analog bypass circuit for a clean, unprocessed bass signal. To
bypass the BP355, press the Up and Down Footswitches simultaneously. The Display reads Bypass
indicating the preset is bypassed. Press any footswitch to exit Bypass and return the BP355 to the last
preset used.

2
Tuner Mode
The Tuner in the BP355 allows you to quickly tune or check the tuning on your bass. Enter Tuner mode by
pressing and holding the Up and Down Footswitches simultaneously for 2 seconds. The Display briefly
shows tuner indicating that you are in Tuner mode. To begin tuning, play a note on your bass (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 in Tuner mode. The Expression Pedal controls the bass volume
while tuning. Exit tuner mode by pressing any Footswitch.
Display shows
note played
Top LEDs indicate
note is sharp
Green LED indicates
note is in tune
Bottom LEDs indicate
note is flat
In Tuner 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 and tuning references. Alternate tunings are A
= A, A = G, A = G, and tuning references A=427 - A=453. The display window briefly flashes the current
tuning reference.
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 Fretless/Wah, Compressor, Distortion, Amp/Cabinet model, EQ,
and Noise Gate 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 11). Changing between
different Tone Library defaults does not change the Chorus/FX, Delay or Reverb, letting you experiment
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 11). Changing between different Effects Library defaults does not change the Fretless/Wah,
Compressor, Distortion, Amp/Cabinet model, EQ, and Noise Gate 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.
Amp Gain (Knob 4)
This knob adjusts the Gain (distortion) for the selected Amp model (not available for Direct).
Amp Level (Knob 5)
This knob adjusts the Level (volume) of the selected Amp model.
Master Level (Knob 6)
This knob controls the overall output volume of all of the BP355’s presets.

3
X-EditTM Editor/Librarian
You can edit your BP355 with your computer, using the X-EditTM Editor/Librarian. Download X-EditTM, USB
drivers, and documentation from www.digitech.com.
Presets
Presets are named and numbered locations of programmed sounds which reside in the BP355. Presets
are recalled with the Footswitches. The active effects in each preset are indicated by lighted LEDs in the
Effect Matrix. The BP355 comes with 70 User presets (1-70) and 70 Factory presets (F1-F70). 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 70 User presets are exact duplicates of the 70 Factory presets.
This allows you to create your own presets without losing the sounds that came with the BP355.
Create Your Sound in Three Easy Steps
1. Tone Library
Select one of 30 different tones from rock, metal, blues, funk, and more. The
tones consist of a combination of Fretless/Wah,
Compressor, Distortion Stompbox, Amplifier/Cabinet, EQ, and Noise Gate.
For a complete list of available tones, see page 34.
2. Effects Library
Select one of 30 different effects chains. The effects consist of a combination
of Chorus/FX, Delay, and Reverb.
For a complete list of available effects chains, see page 34.
3.Effects Level
Adjust the overall level of the post-amp effects to your liking.
... Rock on!
To make further edits, refer to page 11.
To store the preset, refer to page 12.

4
A Guided Tour of the BP355
Front Panel
1
2
3
4
56
7
8
9
1. Up/Down Footswitches
These two Footswitches are used to select presets, access the Tuner, or bypass the BP355. 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 both
Footswitches will access the Tuner. Press any Footswitch to exit Bypass or Tuner mode.
2. Knobs 1-6 (From left to right)
These six 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 34 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 style (Rock, Blues,
Jazz, etc.).
5. When the Expression row is selected, this knob selects the Expression Pedal, LFO 1, and LFO 2
parameter links.
Effects Library (Knob 2)
1. In Performance mode, this knob selects from a library of preset effect chains. (See page 34 for a
list of preset effect chains.)
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, LFO1 or LFO2.

5
Effects Level (Knob 3)
1. In Performance mode, this knob adjusts the overall level of post amp model effects (Chorus/FX,
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 playback Tempo of the drum machine.
4. When the Expression row is selected, this knob selects the heel value for the parameter linked to
the Expression Pedal.
Amp Gain (Knob 4)
1. In Performance mode, this knob adjusts the Amp Gain (distortion) for the selected Amp
model. To change the Amp Gain for Amp A or Amp B, select amp channels using the Amp A/B
Footswitch and use this knob to change each channel’s Amp Gain.
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 Expression row is selected, this knob selects the toe value for the parameter linked to
the Expression Pedal.
4. When the Drums row is selected, this knob changes the drum machine playback level.
Amp Level (Knob 5)
1. In Performance mode, this knob adjusts the Amp Level (volume) of the selected Amp model.
To change the Amp Level for Amp A or Amp B, select amp channels using the Amp A/B
Footswitch and use this knob to change each channel’s Amp Level.
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 Expression row is selected, this knob selects the LFO waveform. LFO 1 or LFO 2 must
first be selected with Knob 1 for this parameter to be available.
Master Volume (Knob 6)
1. In Performance mode, this knob adjusts the output level of the BP355.
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 Expression row is selected, this knob sets the LFO speed. LFO 1 or LFO 2 must first
be selected with Knob 1 for this parameter to be available.
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
11 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 selected preset. While editing a preset, the LEDs indicate that the Effect row is
selected for editing. In Tuner mode, the LEDs indicate whether the note played is sharp, flat, or in tune.
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 Bypass mode, the Display will
read BYPASS. In Tuner mode, the Display will show the note played.

6
6. Drums
The Drums button is used to turn on and off the BP355’s built-in drum machine. When the Drums button
is turned on, the Drums LED lights and the selected drum pattern plays continuously. 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 27 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 12 for more information
about storing presets.
8. Expression Pedal
The Expression Pedal provides real-time control of the BP355’s Volume,Wah, or one of several assignable
effects parameters. Almost every parameter is available for Expression Pedal control. The Expression Pedal
is equipped with a V-switch that turns the Wah feature on or off when you apply extra pressure to the
toe. See page 13 for more information about Wah models; see page 28 to learn about adjusting V-switch
sensitivity and calibrating the Expression Pedal; refer to page 32 for a list of parameters you can link to the
Expression Pedal.
9. Amp A/B Footswitch
This Footswitch switches between two amp channels for the selected preset. The Display will read AmP
Awhen channel A is selected, and AMP B when channel B is selected. Pressing and holding the Amp A/B
footswitch enables and disables the Phrase Looper; see page 27 for more information about using the
Phrase Looper.
NOTE: You can apply different EQ settings, Amp models and/or Amp settings to each amp channel (Amp
A and Amp B).When the EQ or Amp row is selected, press the Amp A/B Footswitch to select a channel.
The display will show which channel is selected (Amp A or Amp B).

7
Rear Panel
1 2 3 4 5 6 7 8 9
1. Input
Connect your instrument to this high-impedance TS input.
2. Amp / Mixer (for the 1/4"Outputs)
This button optimizes the BP355’s 1/4" outputs for use when plugged into a bass amp or a mixer/recording
device. When set to Mixer (“In” position; display reads 1/4MIX), speaker compensation is turned on
and the outputs are optimized for connecting to a mixer or recording device. When set to Amp (“Out”
position; display reads 1/4AMP), the outputs are optimized for running directly in to the input of a bass
amp.
3. 1/4"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.
4. Headphones
Connect stereo headphones to this 1/8" jack. For proper frequency response, the XLR Amp/Mixer switch
should be set to Mixer (“In” position) when using headphones. Headphones with 16-100 Ohm impedance
are recommended.
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 BP355’s Master Level knob for the proper volume balance.
6. Amp / Mixer (for the XLR Outputs)
This button optimizes the BP355’s XLR outputs for use when plugged into a power amp/speaker system or
a mixer/recording device. When set to Mixer (“In” position; display reads xlrMIX), 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; display reads xlrAMP), the outputs are optimized for running directly in
to the input of a bass amp or power amp.
7. XLR Balanced Line Outputs
Connect these outputs to your power amplifier/speaker system or to a mixing console that accepts
balanced XLR connections. Speaker compensation can be enabled on these outputs when connected to a
full-range speaker system. The XLR outputs are always configured for stereo operation.
8. USB Port
The USB port is for connecting the BP355 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.
The BP355 will stream 2 channels up and 2 channels down from the computer at 44.1kHz, 16 and 24 bit. A
utility panel in the Editor/Librarian controls the direct/playback mix and USB record level when used with
recording software. Knobs 4 and 5also control the direct/playback mix and USB record level when USB is
connected and the Fretless/Wah Row is selected.
NOTE: X-Edit Editor/Librarian software and USB drivers can be downloaded at www.digitech.com.
9. Power Input
Connect only the DigiTech®PS0913B power supply to this jack.

8
Section 2 - Getting Started
Making Connections
There are several different connection options available with the BP355. Before connecting the BP355,
make sure that the power to your amplifier and the BP355 is turned off. There is no power switch on the
BP355. To turn the BP355 on or off, connect or disconnect the included PS0913B power supply from the
Power Input jack.
Mono Operation - Amplifier
Connect your bass to the Input of the BP355. Connect a single mono instrument cable from the Left
(Mono) output of the BP355 to the instrument input or effect return on your amplifier. Set the ¼˝ Amp/
Mixer switch to Amp.
Bass Amp Input/
Effect Return
¼” Amp/Mixer
switch set to“Amp”
¼”Left (Mono) Output
Input
Stereo Operation
For stereo operation connect the bass to the Input of the BP355. Connect one cable to the BP355’s
Left (Mono) output, and another cable to the BP355’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 ¼˝ Amp/
Mixer switch to Mixer. If connecting to two amplifiers, set the ¼˝ Amp/Mixer switch to Amp.
Stereo Amp Setup
Bass Amp Inputs/
Effect Returns
¼”Left (Mono)
Output
Input
¼”Right Output
¼” Amp/Mixer
switch set to“Amp”

9
Stereo Mixer Setup
Pan
Mute
-10
0
+5
+10
-20
-30
-∞
-5
L / R
Mute
L / R
Mute
L / R
Mute
L / R
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan -5
-4
-3
-2
-1 0+1
+2
+3
+4
+5
1 2 3 4
-10
0
+5
+10
-20
-30
-∞
-5
-10
0
+5
+10
-20
-30
-∞
-5
-10
0
+5
+10
-20
-30
-∞
-5
Mute
L / R
5
-10
0
+5
+10
-20
-30
-∞
-5
Mute
L / R
6
-10
0
+5
+10
-20
-30
-∞
-5
Mute
L / R
7
-10
0
+5
+10
-20
-30
-∞
-5
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Aux 1
0
2
4 6
8
10
Aux 2
0
2
4 6
8
10
Mute
L / R
8
-10
0
+5
+10
-20
-30
-∞
-5
Input
XLR Left Out
XLR Right Out
XLR Amp/Mixer
switch set to“Mixer”
Computer Recording Setup
USB Ports
Input
XLR Amp/Mixer
switch set to“Mixer”
XLR Left Out XLR Right Out
USB
Studio Reference
Monitors
Amp/Mixer Setup
Stereo Power Amp
2- Speaker Cabs
Input
PA Speaker (Left)
XLR Left and
Right Outputs
1/4" Left and
Right Outputs
PA Speaker (Right)
Pan
Mute
-10
0
+5
+10
-20
-30
-
-5
L/ R
Mute
L/ R
Mute
L/ R
Mute
L/ R
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-1 0+1
+2
+3
+4
+5
1234
-10
0
+5
+10
-20
-30
-
-5
-10
0
+5
+10
-20
-30
-
-5
-10
0
+5
+10
-20
-30
-
-5
Mute
L/ R
5
-10
0
+5
+10
-20
-30
-
-5
Mute
L/ R
6
-10
0
+5
+10
-20
-30
-
-5
Mute
L/ R
-10
0
+5
+10
-20
-30
-
-5
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Aux1
0
2
46
8
10
Aux2
0
2
46
8
10
Mute
L/ R
-10
0
+5
+10
-20
-30
-
-5
Mixer
XLR Amp/Mixer
switch set to“Mixer”
¼” Amp/Mixer
switch set to“Amp”

10
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 BP355.
3. Connect the other end of the PS0913B power supply to an AC outlet. Turn the BP355’s Master Level
knob (Knob 6) 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 BP355’s Master Level knob to achieve the desired volume.
4.Turn amp volume up
1.Turn amp volume down
2. Connect PS0913B to power jack
3. Connect PS0913B
to AC outlet and
turn the BP355’s
Master Level to “0”
5.Turn the BP355’s Master Level
to the desired listening volume

11
Section 3 - Editing Functions
Editing/Creating Presets
The BP355 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 34) based on
different musical styles. The Effects Library knob will then let you select from a palette of effects chains
(see page 34), from simple delays to full multi-effect signals with modulation, delay and reverb. Use the
Effects Level Knob to increase or decrease the overall 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.
1. Select a tone
with the
Tone Library knob
2. Select an effect
or effects chain with the
Effects Library knob
3. Adjust the
effects level with the
Effects Level knob
To edit and create a preset:
1. Use the Up and Down Footswitches to select the preset you wish to edit.
2. If you find a preset close to what you want, you can begin editing the effect parameters by pressing the
Edit Up/Down buttons and selecting the Effect row you want to edit.
3. 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.
4. Press the Edit Up/Down buttons to begin selecting the individual Effects rows to edit their
parameters.
5. To bypass or enable an Effect row, press the Tone Library knob.
6. Use the Knobs 2-6 to modify the effects’ parameter settings.
7. When editing the Amp Model and EQ rows, use the Amp A/B Footswitch to select between the
two amp channels. You can then edit each channel’s Amp Model, Cabinet Model, Amp Gain,Amp Level,
and EQ settings independently.
8. Select the Fretless/Wah row using the Edit Up/Down buttons and use Knob 6 to set the overall
Preset Level.
NOTE: 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 BP355 will revert to the stored values for the preset.

12
Storing/Copying/Naming a Preset
Once the preset has been modified to your liking, you may store your settings to any of the 70 User preset
locations (presets 1-70). 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 Display
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 second stage
of the storing process. The red Display begins to flash.
4. Select the User preset location where your new sound will reside using the Up and Down
Footswitches. The displays show the preset name and User preset number about to be overwritten.
4. Select destination
with Footswitches
3. Press Store again;
Preset number flashes
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 Footswitches
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.

13
Section 4 - Models and Parameters
About the Models
The BP355 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 BP355 has placed the Amp and Effect models in an order for optimum results. The
following diagram shows the order in which they are connected.
Fretless/
WahCompressor EQ
Cabinet
Distortion Amp
Chorus/FX
Noise Gate Delay Reverb
Model Definitions
Each Amp and Effect model within the BP355 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 BP355’s effects
outlines what each effect and parameter does.
Fretless/Wah
The Fretless simulator creates a fretless bass sound when using a fretted bass. Wah is an effect controlled
by an Expression Pedal making the bass sound as if it’s saying “Wah.”
Fretless/Wah Model - Knob 1 selects the Fretless Simulator or Wah model.
FRET 1 - 3(Fretless Simulator), CRYwah (based on a Dunlop®Cry Baby Wah®), clyde(based on a
Vox ®Clyde McCoyTM Wah), and FULRNG (DigiTech®Full Range Wah sweeps the entire spectrum of
audible frequencies). Press this knob to turn the model on and off.
Fretless Amount - Knob 2 adjusts the amount of Fretless Simulator mixed in with the dry signal.
Ranges from 0to 99.
Wah Minimum - Knob 3 adjusts the Wah Pedal Minimum. Ranges from 0(toe up) to 99 (toe
down).
Wah Maximum - Knob 4 adjusts the Wah Pedal Maximum. Ranges from 0(toe up) to 99 (toe
down).
Wah Level - Knob 5 adjusts the Wah Level. Ranges from 0dB to +12dB.
NOTE: If any of the 3 Wah types are selected in Fretless/Wah, the wah can be turned on and off by
pressing firmly on the Expression pedal toe. The Expression pedal will override any expression link and
control the wah when it is enabled. If any of the 3 Fretless types are selected,Wah cannot be used and
pressing on the Expression pedal toe will do nothing.

14
Compressor
A Compressor is used to increase sustain, tighten up the bass, 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 three Compressor models: DIGCMP (DigiTech®Compressor),
CSCOMP (Based on a Boss®CS-2 Compressor/Sustainer), or DYNCOMP (Based on an MXR®
Dynacomp). Press this knob to turn the selected Compressor model on and off.
Knobs 2-6 have the following functions for the various Compressor models:
Compressor
Model
Knob 2
(Sustain)
Knob 3
(Tone)
Knob 4
(Attack)
Knob 5
(Crossover Freq)
Knob 6
(Compressor
Level)
digcmp Sustain Tone Attack Crossover Level
cscomp Sustain Attack -- -- Level
dyncmp Sensitivity -- -- -- Output
Distortion
The BP355 models the tones of 18 popular distortion stompboxes, each of which can be tweaked and
modified, just like the real thing.
Distortion Model - Knob 1 selects one of 18 Distortion models. Press this knob to turn the
selected Distortion model on and off.
scream Based on an Ibanez®TS-9
808 Based on an Ibanez TS-808 Tube
Screamer
Spark Based on a Voodoo Lab Sparkle
Drive
oddriv Based on a Guyatone®Overdrive
OD-2
dod250 Based on a DOD®250
Overdrive/Preamp
redlne DigiTech Redline Modified
Overdrive
rodent Based on a Pro Co RATTM
mxdist Based on an MXR®Distortion +
DSDist Based on a Boss®DS-1TM
Distortion
grunge DigiTech®Grunge®
zone Based on a Boss MT-2 Metal Zone®
death DigiTech Death MetalTM
gonklt Based on a DOD Gonkulator
Ring Mod
8tavia Based on a Roger Mayer OctaviaTM
fuzltr Based on a Demeter Fuzzulator
clasfz Based on a DOD Classic Fuzz
fuzzY Based on an Arbiter®Fuzz FaceTM
big MP Based on an Electro-Harmonix®
Big Muff Pi®

15
Knobs 2-6 have the following functions for the various Distortion models:
Dist. Model Knob 2
(Gain)
Knob 3
(Param. 1)
Knob 4
(Param. 2)
Knob 5
(Param. 3)
Knob 6
(Distortion
Level)
P7
(X-EditTM
only)
Scream Drive Tone -- -- Level --
808 Overdrive Tone -- -- Level --
SPARK Gain Tone Clean -- Volume --
oddriv Drive -- -- -- Level --
DOD250 Gain -- -- -- Level --
redlne Gain Low High -- Level --
rodent Distortion Filter -- -- Level --
mxdist Distortion -- -- -- Output --
dsdist Gain Tone -- -- Level --
Grunge Grunge Butt Face -- Loud --
zone Gain Low Mid Level High Level Mid Freq
death -- Low Mid High Level --
gonklt Gunk Smear Suck -- Heave --
8tavia Drive -- -- -- Volume --
fuzltr Fuzz Tone Loose/Tight -- Volume --
clasfz Fuzz Tone -- -- Volume --
fuzzY Fuzz -- -- -- Volume --
big MP Sustain Tone -- -- Volume --

16
Amplifier
Amp Modeling is a technology which applies the tone of several popular modern and vintage amps.
NOTE: You can select different Amp models and/or modify Amp settings for each amp channel (Amp
A and Amp B).When the Amp row is selected, press the Amp A/B Footswitch to select a channel.The
display will show which channel is selected (Amp A or Amp B).
Amp Model - Knob 1 selects one of the classic, modern, and DigiTech custom Amp models. 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.
RCKSVT Based on an Ampeg® SVT
ASHDWN Based on an AshdownTM Bass
Magnifier
BASSMN Based on a Fender® Bassman®
SOLAR Based on a Sunn® 200S
STELAR Based on an SWR® Interstellar
Overdrive™
COMNDO Based on a Trace-Elliot®
Commando™
BOMBER Based on an Ampeg B15
HIWTAG Based on a Hiwatt® Custom 50
BOOGIE Based on a Mesa Boogie® 400+
BASIC Based on a SWR® Basic Black
900JCM Based on a Fender Dual
Showman™
DEMTER Based on a DemeterTM VTBP-201S
57dlux Based on a ‘57 Fender Tweed
Deluxe
65TWIN Based on a ‘65 Fender Blackface
Twin Reverb®
77mstr Based on a ‘77 Marshall® Master
Volume
topbst Based on a ‘63 Vox® AC30 Top
Boost
rectfr Based on an ‘01 Mesa Boogie®
Dual RectifierTM
digslo DigiTech® Solo
DIGCLN DigiTech Clean Tube
diggan DigiTech High Gain
DIRECT Direct
Cabinet - When the Amp/Cabinet row is selected, Knob 2 selects the speaker Cabinet model.
AC1X18 Based on an Acoustic® 360 1x18
AM1X15 Based on an Ampeg® Portaflex
1x15
SW1X15 Based on an SWR® Basic Black
1x15
SU2X15 Based on a Sunn® 2x15
ED4X10 Based on an EdenTM 4x10 with horn
BM4X10 Based on a Fender® Tweed
Bassman® 4x10
HW4X12 Based on a Hiwatt® 4x12 with
Fane speakers
AM8X10 Based on an Ampeg 8x10
DL1X12 Based on a Fender Tweed Deluxe
1x12
TW2X12 Based on a Fender Dual
Showman® 2x12
VX2X12 Based on a Vox® AC30 Top Boost
2x12
MA4X12 Based on a Marshall® 1969
Straight with Celestion®
G12-T70 speakers
VTG412 Based on a Mesa Boogie® with
Celestion Vintage 30’s
Direct No cabinet model
Amp Gain - Knob 3 adjusts the Gain (distortion) for the selected Amp model (not available for
Direct). The Gain parameter ranges from 0to 99.
Amp Level - Knob 6 adjusts the Level (volume) of the selected Amp model. The Level parameter
ranges from 0to 99.

17
EQ
The BP355’s EQ helps further shape your tone with Bass, Midrange, and Treble controls. To help get you
started, there are four preset EQ curves: Mid Boost (midbst), Scoop (ScooP), Bright (BRight), and
Warm (WarM) that can be selected using Knob 1. Bass, Midrange, and Treble parameters range from -12dB
to +12dB.
NOTE: You can modify EQ settings for each amp channel (Amp A and Amp B).When the EQ row is
selected, press the Amp A/B Footswitch to select a channel.The display will show which channel is
selected (Amp A or Amp B).
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). Ranges from -12dB to 12dB.
Mid Frequency - Knob 3 selects the frequency that the Mid parameter adjusts. Ranges from 300 Hz
to 5000 Hz.
Mid Range - Knob 4 adjusts the amount of midrange level. Ranges from -12dB to 12dB.
Treble - Knob 5 adjusts the amount of high end level (Treble). Ranges from -12dB to 12dB.
Presence - Knob 6 boosts or cuts the Presence level for the selected channel. Ranges from -12dB
to 12dB.
Treble Frequency (X-EditTM only) - This parameter selects the frequency that the Treble parameter
adjusts. Ranges from 500 Hz to 8000 Hz.
Noise Gate/Auto Swell
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 Auto Swell effect.) Press this knob to
turn the Noise Gate/Auto Swell on and off.
Threshold (Noise Gate only) - Knob 2 sets the signal strength (Threshold) required to open or
close the Noise Gate. Parameters range from 0(opens easily) to 99 (requiring strong signals to
open).
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 - Knob 5 sets the Attenuation parameter. Ranges from 0to 99.
Swell Sensitivity (Auto Swell only) - Knob 6 sets the Swell Sensitivity parameter of the Auto
Swell. Ranges from 0to 99.