Effect Types List
Presets Patch List
Drum Rhythm List
Specifications
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89
97
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OVERVIEW
Introduction
Thank you for choosing a VALETON prod uct!
The GP-1 is a compact, high performance guitar multi-effects processor. It offers a potent effects
processing platform and complete feature set, so you can improve your skill and experiment with
different guitar effects, all with one simple-to-use, Portable device.
The GP-1 has 100 effects to choose from and allows you to run 8 effects simultaneously. It provides a
EXP jack that allows you to connect an external Expression Pedal, which can be assigned to the effect
you want to control for real-time effect changes.
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100 included factory presets let you jump right in, and 100 user presets allow you to store all your
favorite effects.
The built-in tuner gets your guitar in tune. The built-in drum machine and aux input jack set you up
to play along with a drum loop, metronome, or your favorite music.
Whether you're a beginner or an old guitar freak, the GP-1’s got it all to let you have at it!
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1
Module Selector:
Switches between function modules.
In patch edit mode, this knob selects
the module/parameter for operation.
LED Display:
3
This display shows the patch
numbers, setting values, and
other operation information.
PANEL INTRODUCTION
Top View
2
1
3
4
6
2
4
PARA knob (with enter button):
This knob is used to set the master
level or change parameter values. Press
the button to switch the type of effect,
begin storing, etc.
4
[+]/[-] Footswitches:
These footswitches are used for
controlling preset up/down, the
tuner, start/stop drum rhythm,
start/stop/record phrases and
other functions.
6
OUTPUT Jack:
1/4” stereo audio jack, for connecting
to a guitar amplifier. You can use a
mono cable to output the signal to an
amplifier, or use a Y cable to output
the signal to two amplifiers.
You can also use a neutral stereo plug
to output the signal to headphones.
Rear View
7
AUX IN Jack:
1/8” (3.5mm) stereo input audio
jack. You can connect a CD player,
MP3Player or other devices for
jamming, practicing, and
performance.
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External Expression Pedal Jack:
1/4” stereo audio jack, for
connecting a external expression
pedal. You need a stereo cable
with1/4” stereo plugs at both ends
of the cable for connecting.
5
INPUT Jack:
1/4” mono audio
jack, for connecting
guitar.
5
Battery Holder:
10
For installing batteries (AAA x 4).
6
10
7
9
8
7
9
DC 9V Jack:
For power supply, use a 9-volt
DC regulated by AC adapter,
500mA (plug polarity is
positive on the barrel and
negative in the center).
CONNECTIONS
Applying Power
1. Before applying power to anything, set your amp to a clean tone.
2. Turn the amp volume all the way down.
3. Connect the power supply to the power jack.
4. Connect the other end of the power supply to an AC outlet.
Applying batteries
1. Insert 4 AAA batteries into the battery holder.
2. Set your amp to a clean tone.
3. Turn the amp volume all the way down.
4. The device will turn on when you plug the guitar cable into the INPUT jack.
5. When not using the unit, please remove the cable from the INPUT jack.
NOTE : When the r emain ing cha rge is low , “LBAT” ap pears o n the dis play and will fla sh.
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Headphone/Practice Configuration
Guitar
Headphones
9
Portable
Music Player
EXP
Power Supply
Mono Amp Configuration
Guitar
Amp
1/4" Mono Cable
Power Supply
10
Stereo Amp Configuration
Amp 1Amp 2
Guitar
1/4" Stereo Y Cable
Power Supply
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GETTING STARTED
Modes Explained
The GP- 1 has two operation modes: Play Mode and Edi t Mode.
Play Mode
When the GP-1 is powered on and the module selector is turned to “Preset”, the unit will be in Play
Mode. The LED screen shows the patch number ( from U-00 to P-99). Play Mode allows you to
navigate presets using the PARA knob or footswitches.
When in Play Mode:
Push the PARA button to start/stop the Drum Machine.
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Edit Mode
Edit Mode allows you to adjust the global Master Level, the Patch Level, select between the different
effect modules, edit effects, and edit the settings for the built-in drums.
NOTE:
·Effect settings changed in Edit Mode will need to be stored to a preset patch.
·The exceptions are the Master Level and drum machine settings, which are global settings and are not stored to
presets.
·Whenever you change a stored preset’s effect settings, the “EDIT” dot below the screen will light up, indicating the effect
settings have been changed from the stored value in the preset.
·See "Editing Presets" (page 23) for more information on storing presets.
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Navigating Presets
The GP-1 has two preset banks: the User preset bank, which
appears in the LED display as U-00 to U-99, and the Factory preset
bank, which appears in the LED display as P-00 to P-99. From Play
Mode, step on the [+]/[-] footswitches or turn the PARA knob to
change presets (Hold down the [+] footswitch to scroll through
presets).
NOTE:
·Using pre-patch-select mode (Page 32) , you can jump directly to a patch that is far from the current patch.
·See page 89 for more information on the Presets Patch List section.
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Bank Switch
In play mode, hold down the [-] footswitch for more than 2
seconds until “BANK” appears on the screen.
The tens place digit of the current patch number will begin flash.
Step on the [+]/[-] footswitches or rotate the PARA knob to
change the preset number.
Press and hold the [-] footswitch to toggle to the ones place
digits, and repeat the step above to change the preset number.
Turn the module selector to “Preset”, then hold down the [-] footswitch / press the PARA knob / press
both FOOTSWITCHES simultaneously to exit this mode.
NOTE: In this mode, you can still edit the presets.
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Using The Tuner
Turn the module selector to “Preset”, then press and hold both
FOOTSWITCHES simultaneously.
After “BTU” appears on the screen, release the switches within one
second, and the unit will be set to bypass/tuner.
Press and hold both FOOTSWITCHES simultaneously. After “BTU”
disappears and “MTU” appears on the screen, release the switches
within one second, the unit will be set to the mute/tuner.
NOTE:
· If you continue to press both [+]/[-] foot switches for more than 2 seconds,the looper becomes active (Page 18).
·You can not set the unit to bypass/mute if the module selector isn’t set at PRESET.
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Turn the PARA knob to set the standard pitch of middle A from 435Hz
to 445Hz (Default: 440 Hz) when the unit is in the “BTU/MTU”.
The note name appears on screen. The top 5 LEDs indicate the note of
your playing is sharp or flat; the center green LED indicates the note is
in tune. The second flashing dot (#) below the screen indicates the
sharp note.
Press either FOOTSWITCH to exit the “BTU/MTU”.
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Looper Function
Turn the module selector to “Preset”, then press and hold both
FOOTSWITCHES simultaneously for more than 2 seconds until
“LOOP” appears on the screen. Then release the switches to begin
using the Looper Function.
After “LOOP” disappears, “EMPT” will appear on the screen,
indicating the current loop data.
Press the left FOOTSWITCH, and play a guitar phrase. “REC”
appears on the display and recording starts. When loop recording
is active, the flashing dot indicating “Loop Data” will light up.
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To stop loop playback, press the right footswitch (“STOP” appears
on the display).
To start loop playback again, press the left footswitch.
Press the left FOOTSWITCH again to set the loop point, and the
recorded phrase will begin playing back. “PLAY” appears on the
display.
During loop playback, press the left footswitch (“REC” appears on
the display) and begin playing the overdub phrase.
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To end overdubbing, press the left footswitch again (“PLAY”
appears on the display), and the looped phrase will play with the
newly added overdub phrase.
NOTE:
·When in looper mode, use the PARA knob to change the presets, and the effects can still be edited.
·When in looper mode, push the PARA knob to start/stop the drum machine.
·To clear a recorded loop, press and hold the right footswitch for 2 seconds until the display reads “EMPT”, and the
flashing dot of “loop data” will OFF.
·Press and h old bot h FOOTSW ITCHE S simul taneo usly to return t o PLAY mode .
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Drum Machine
Turn the module selector to the DRUM module. The first top LED
above the screen will light to indicate the drum pattern.
Press either [+]/[-] footswitch to start playback of the current drum pattern, and press either [+]/[-]
footswitch again to stop playback of the drum loop.
Whether the drum loop is playing or stopped, turn the PARA knob to change the drum pattern.
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Press the PARA knob to move the target parameter to Drum
Volume from 00 to 99 (the second top LED above the screen will
light up ), then turn the PARA knob to adjust the parameter.
Press the PARA knob to move the target parameter to BPM (the
third LED above the screen will light up). Then turn the PARA knob
to adjust the parameter. Tempo can be set in a range from 040 to
280.
NOTE:
·When in Play and Looper mode, press the PARA knob to start/stop drum playback.
·When in Edit mode, press the right footswitch to start/stop drum playback.
·When in LOOPER mode, drum rhythm can be recorded in the loop data of the first recording. When recording is finished
and turned to playback, the drum function will become unavailable until the loop data is cleared.
·See page 97 for more information on the Drum Rhythm List section.
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EDITING FUNCTIONS
EDITING PRESETS
Turn the module selector to Preset, then press either [+]/[-] footswitch to start with an existing preset.
Turn the module selector to the effect module you wish to edit.
This activates Edit mode. The available setting options are listed below:
01. COMP
02. NR
03. DS/AMP
04. EQ
05. CAB
06. MOD
07. DLY
08. REV
For mo re modu le deta ils, pl ease NOTE :che ck Effe ct Types an d Parame ters se ction (Page 3 6).
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Turn the module selector to the effect module and press the left footswitch to bypass or enable an
effect module.
Turn the module selector to the desired effect module and press the
PARA knob to enable it.
To edit a enabled module in the edit mode, rotate the PARA knob
to select an effect TYPE (the TYPE selected is indicated as the top
LED lights up).
Press the PARA knob to select among three parameters of the current effect ( the A/B/C selected is
indicated as the top LED lights up).
Rotate the PARA knob to modify the effects settings by the current parameter.
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Anytime a stored value within a preset is changed, the “EDIT” dot
below the screen will light up , including the Patch Volume and
the EXP target parameters (indicated by the TYPE LED and the B/C
LED of the UTIL position).This indicates that you need to store the
changes.
If you change presets or cut the power before saving, all edits will be lost.
Save the patch to retain your settings.
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UTILTY
Turn the selector module to UTIL, and the A will be selected
(indicated as the top LED lights up). Rotate the PARA knob to
adjust the Master Volume (from 00 to 99). Use this parameter to
control the global output level.
Press the PARA knob until B has been selected (indicated as the
top LED lights up). Rotate the PARA knob to adjust the Patch
Volume (from 00 to 99). Use this parameter to adjust the current
patch output level, then press and hold the PARA knob to store
the preset.
NOTE: Press the PARA knob to choose TYPE or C in the UTIL mode to set the target parameters linked to the EXP. See "EXP"
on page 34 for more information on this operation.
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Storing Presets
After you finish editing a preset, press and hold the PARA knob. The display will begin to flash.
Rotate the PARA knob to select a user preset location. The display will show the patch number (from
U00 to U99).
Press the PARA knob again to store the preset in that patch bank.
Copying A Preset
1. Turn the m odule s elector to “Preset”. Use t he F OOTS WITCHES o r PARA kn ob to sel ect the
pre set you wish to copy.
2. Press a nd hold t he PARA k nob. The patc h number will begin flas hing in t he L ED dis play.
3. Use the PARA knob or foots wi tch to select a pa tch ban k where you wo uld lik e to store the
pre set (in dicat ed on the d isplay).
4. Press t he PARA k nob again to cop y the preset to this patch ban k.
NOTE : Turn th e modul e selec tor during th e above p rocedu re to canc el stori ng the pre set.
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OTHER FUNCTIONS
External Expression Pedal
Turn the selector module to UTIL, and press the PARA knob until TYPE
has been selected (indicated as the top LED lights up). Rotate the
PARA knob until the target parameter appears in the display.
(See for the list o f param eters that can b e used wi th an Page 36
Exter nal Exp ressi on Pedal).
Press the PARA knob until C has been selected (indicated as the top LED lights up).
Press either [+]/[-] footswitch to select a target parameter for the External Expression Pedal (Max/Min
appears in the display).
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Rotate the PARA knob to select the minimum value the assigned parameter will reach with the
Expression Pedal in the heel position.
Rotate the PARA knob to select the maximum value the assigned parameter will reach with the
Expression Pedal in the toe position.
Store the Expression Pedal assignment to a preset.
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Note:
·See page for more information on the Effect Type Parameters section.36
·A pedal icon appears next to effect types/parameters that can be controlled by the external expression pedal.
·When you choose the target parameter in the TYPES of UTIL, its corresponding effect module must be enabled. Once the
external expression pedal has been plugged in, the last dot below the screen (EXP) will light up, which indicates the EXP
can be used.
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Factory Reset
Use this function to reset the GP-1 to its factory settings. This procedure erases all custom
user presets. Be sure you want to erase the memory, as all user-programmed data will lost!
Performing a Factory Reset is as follows:
1. Turn the module selector to Preset and connect the power while pressing and holding both
[+] [-] footswitches simultaneously.
2. When the “RST” appears on the display, release the footswitches. The screen will begin flashing.
3. Press the PARA knob to restore all patches to their original factory settings and return to preset
mode.
4. To cancel this operation, press either [+]/[-] footswitch before step 3.
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Pre-Patch-Select
This function allows you to select a bank and patch in advance, and only switch to that patch after
you confirm the selection. This function is convenient during a live performance when you want to
switch to a patch that is saved in a distant position. In this mode, the LED will keep flashing.
1. Turn the module selector to Preset and connect the power while pressing and holding
the [+] footswitch.
2. When the “PPS” appears on the display, release the PARA knob, which will be flashing.
3. Press the PARA knob again to enter this mode.
4. To cancel this operation, press either [+]/[-] footswitch before step 3.
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Press either [+]/[-] footswitch to navigate in this mode. The patch number will keep flashing until
confirmation is completed in step 3.
To change the patch, press both [+] [-] footswitches simultaneously.
Note:
·If you enter edit mode or store mode when the screen for step 2 is open, the current patch will be the one affected.
·Reconnect the power to return to the usual patch order.
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Expression Pedal Calibration
The external expression pedal can be calibrated if it does not function properly.
The procedure for calibrating the external expression pedal is as follows:
1. Turn the m odule s elector to UT IL and c onnec t the power whil e pressing and h oldin g
the PARA knob. “EXPE” appe ars on the display.
2. When th e displ ay prompts you with “SMI N”, press the expre ssion p edal al l the way b ack
(to e up) and press th e PARA kn ob.
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3. When the displ ay prompts you with “SMAX”, press the expression pedal forward (toe
dow n) and press the PARA k nob.
4. “CP LE” will appear on the display, an d then th e unit enters pl ay mode.
Not e: If the di splay s hows “E RR”, you sho uld rep eat ste p 2.
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Effect Types and Parameters
COMP (Compressors & Pre Effects) Module(15)
L.BST (Low B oo st )
These 3 effects increase bass/mid/high frequency signal gain to make the sound more satiated and powerful.
Para APara B
G (Gain): 01~50T (Tone): 01~50V (Volume): 01~50
Adjusts the boost gain
amout.
Adjusts the tone.
Para C
Adjusts the level of the signal
after it has passed through the
module.
Module Nam e
EXP Ta rge t (T YPE )
VOL (Volume)
Assigning the PARA C of this
effect is controlled by EXP.
Parameter s A-C & EX P Target
Type o f Effe cts
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EFFECT TYPES LIST
COMP (Compressors & Pre Effects) Module(15)
L.BST (Low B oo st )
This effect increases bass frequency signal gain to make the sound more satiated and powerful.
Para APara B
G (Gain): 01~50T (Tone): 01~50V (Volume): 01~50
Adjusts the boost gain
amout.
Adjusts the tone.
M.BST (Mid B oo st )
This effect increases mid frequency signal gain to make the sound more satiated and powerful.
Para APara B
G (Gain): 01~50
Adjusts the boost gain
amout.
T (Tone): 01~50
Adjusts the tone.
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Para C
Adjusts the level of the signal
after it has passed through the
module.
Para C
V (Volume): 01~50VOL (Volume)
Adjusts the level of the signal
after it has passed through the
module.
EXP Ta rge t (T YPE )
VOL (Volume)
Assigning the PARA C of this
effect is controlled by EXP.
EXP Ta rge t (T YPE )
Assigning the PARA C of this
effect is controlled by EXP.
H.BST (Hig h Bo os t)
This effect increases high frequency signal gain to make the sound more satiated and powerful.
Para APara B
G (Gain): 01~50T (Tone): 01~50V (Volume): 01~50
Adjusts the boost gain
amout.
Adjusts the tone.
Para C
Adjusts the level of the signal
after it has passed through
the module.
R.CMP (Red Compressor)
Based on the MXR M132 Super Comp*.
Para APara B
Adjusts the sensitivity.
Higher values result in
higher sensitivity.
Adjusts the amount of time the
compressor takes to respond to a
signal that exceeds the threshold.
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Para C
V (Volume): 01~50 A (Attack): 01~50 S (Sense): 01~50
Adjusts the level of the signal
after it has passed through the
compressor.
EXP Ta rge t (T YPE )
VOL (Volume)
Assigning the PARA C of this
effect is controlled by EXP.
EXP Ta rge t (T YPE )
VOL (Volume)
Assigning the PARA C of this
effect is controlled by EXP.
Para APara B
Adjusts the compressor ratio.
This effect provides a fully controllable wah effect depending on picking dynamics.
Para APara B
S (Sense): 01~50
Adjusts the effect sensitivity
L.CMP (LA Com pr es so r)
This compressor allows more detailed adjustment.
Para C
T (Tone): 01~50 C (Comp): 01~50VOL (Volume)
Adj usts th e tone .
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
compressor.
EXP Ta rge t (T YPE )
Assigning the PARA C of
this effect is controlled by
EXP.
T.WAH (T-Wa h Wah)
EXP Ta rge t (T YPE )
WAH (Sense)
Assigning the PARA A of
this effect is controlled by
EXP.
R (Reso): 01~50
Adj usts th e inte nsity of the
res onance sound .
Para C
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
effect.
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Para APara B
Adjusts the effect depth.
Para APara B
Q: 01~50
Adjusts the intensity of the
resonance sound.
A.WAH (A-Wah Wah)
This effect varies wah effect automatically with speed control.
Para C
S (Speed): 01~50 D (Depth): 01~50
Adj usts th e effec t spee d.
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
effect.
Q.WAH (Q-Wah Wah)
This effect varies wah effect automatically and provides a Q control.
Para C
S (Speed): 01~50
Adj usts th e effec t spee d.
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
effect.
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EXP Ta rge t (T YPE )
SPD (Speed)
Assigning the PARA B of
this effect is controlled by
EXP.
EXP Ta rge t (T YPE )
SPD (Speed)
Assigning the PARA B of
this effect is controlled by
EXP.
Para APara B
F (Freq): 01~50
Adjusts the emphasized
frequency.
Para APara B
F (Freq): 01~50
Adjusts the emphasized
frequency.
C.WAH (C-Wah Wah)
Based on the vintage CryBaby* wah pedal.
Q: 01~50
Adj usts th e inte nsity of the
res onance sound .
V.WAH ( V-Wah Wah)
Based on the vintage Vox V846* wah pedal.
Q: 01~50
Adj usts th e inte nsity of the
res onance sound .
Para C
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
effect.
Para C
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
effect.
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EXP Ta rge t (T YPE )
WAH (Freq)
Assigning the PARA A of
this effect is controlled by
EXP.
EXP Ta rge t (T YPE )
WAH (Freq)
Assigning the PARA A of
this effect is controlled by
EXP.
Para APara B
Sets the level that activates
the limiter.
Para APara B
Sets the level that activates
the effect.
LMT (Limit er )
This effect reduces high-level signals only.
Para C
R (Release): 01~50 T (Threshold): 01~50VOL (Volume)
Se ts th e rele ase t ime.
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
limiter.
EXP Ta rge t (T YPE )
Assigning the PARA C of
this effect is controlled by
EXP.
S.ATK (Slow At ta ck )
Based on the BOSS SG -1 Slow Gear* pedal.
EXP Ta rge t (T YPE )
ATK (Attack)
Assigning the PARA B of
this effect is controlled by
EXP.
A (Attack): 01~50T (Threshold): 01~50
Adj usts th e amou nt of t ime
the effect t akes to resp ond
to a signal that e xceeds the
thr eshold .
Para C
V (Volume): 01~50
Adjusts the level of the signal
after it has passed through the
effect.
42
Based on the Electro-Harmonix Micro POG*, which allows adding two octave voices (below/above the original sound)
blend with dry level control .
Para APara B
Sets the level of one Octave
below.
Para APara B
Sets the modulation frequency.
OCTA (Octave )
Set s the l evel of one Oc tave
abo ve.
RMOD (Ring Mo d)
This effect produces a magic ringing sound.
T (Tone): 01~50F (Freq): 01~50
Adj usts th e tone .
Para C
D (Dry): 01~50 H (High): 01~50L (Low): 01~50
Adjusts the dry signal level.
Para C
MIX: -25 ~ +25
Controls the mix level of the
ringmod.
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EXP Ta rge t (T YPE )
DRY
Assigning the PARA C of
this effect is controlled by
EXP.
EXP Ta rge t (T YPE )
FREQ
Assigning the PARA A of
this effect is controlled by
EXP.
Para APara B
Sets the modulation frequency.
LOFI (Lo-F i)
This effect produces a lo-fi style tone.
T (Tone): 01~50F (Freq): 01~50
Adj usts th e tone .
Para C
MIX: -25 ~ +25
Controls the mix level of the
Lo-Fi.
44
EXP Ta rge t (T YPE )
MIX
Assigning the PARA C of
this effect is controlled by
EXP.
NR (Noise Reduction) Module(2)
ST.NR (Stand ar d No is e Re du ct io n)
This is a noise gate that eliminates the noise when you are not playing.
Para APara B
T (Threshold): 01~50A (Attack): 01~50R (Release): 01~50
Sets the level that activates the
noise gate.
Set s the a ttack t ime.
HD.NR (Har d No is e Re du ct io n)
This is a noise gate with a hard reduction process.
Para APara B
T (Threshold): 01~50A (Attack): 01~50R (Release): 01~50