BOSSCO GX-100 User manual

GX -100
Parameter Guide

Table of contents
2
Table of contents
EFFECTS ...............................................................................................................................................................................................................5
COMPRESSOR ................................................................................................................................................................................................. 5
X-COMPRESSOR.............................................................................................................................................................................................. 6
BOOSTER......................................................................................................................................................................................................... 7
OVERDRIVE ..................................................................................................................................................................................................... 8
X OVERDRIVE.................................................................................................................................................................................................. 9
DISTORTION..................................................................................................................................................................................................10
X DISTORTION ..............................................................................................................................................................................................11
METAL DISTORTION .....................................................................................................................................................................................12
FUZZ..............................................................................................................................................................................................................13
AIRD PREAMP ...............................................................................................................................................................................................14
AIRD PREAMP TYPE List ..................................................................................................................................................................................................................... 14
SP TYPE List ............................................................................................................................................................................................................................................ 15
MIC TYPE List ......................................................................................................................................................................................................................................... 15
PARAMETRIC EQUALIZER ............................................................................................................................................................................16
GRAPHIC EQUALIZER ...................................................................................................................................................................................17
CHORUS ........................................................................................................................................................................................................18
PRIME CHORUS.............................................................................................................................................................................................20
FLANGER .......................................................................................................................................................................................................21
PRIME FLANGER ...........................................................................................................................................................................................22
PHASER .........................................................................................................................................................................................................23
SCRIPT PHASER.............................................................................................................................................................................................24
PRIME PHASER..............................................................................................................................................................................................25
CLASSIC-VIBE................................................................................................................................................................................................26
ROTARY.........................................................................................................................................................................................................27
VIBRATO........................................................................................................................................................................................................28
PRIME VIBRATO ............................................................................................................................................................................................29
TREMOLO ......................................................................................................................................................................................................30
PAN................................................................................................................................................................................................................31
RING MODULATOR.......................................................................................................................................................................................32
PITCH SHIFTER.............................................................................................................................................................................................. 33
HARMONIST..................................................................................................................................................................................................34
USER SCALE Settings .......................................................................................................................................................................................................................... 35
OVERTONE ....................................................................................................................................................................................................36
OCTAVE .........................................................................................................................................................................................................37
POLY OCTAVE ...............................................................................................................................................................................................38
DELAY............................................................................................................................................................................................................39
DELAY PLUS ..................................................................................................................................................................................................40
TYPE: DUAL Parameters..................................................................................................................................................................................................................... 41
ANALOG DELAY ............................................................................................................................................................................................42
SPACE ECHO ................................................................................................................................................................................................. 43
SHIMMER DELAY ..........................................................................................................................................................................................44
TERA ECHO....................................................................................................................................................................................................45
TWIST ............................................................................................................................................................................................................46
WARP.............................................................................................................................................................................................................47
REVERB..........................................................................................................................................................................................................48
REVERB PLUS ................................................................................................................................................................................................49
SHIMMER REVERB ........................................................................................................................................................................................50
AC GUITAR SIMULATOR ...............................................................................................................................................................................51
AC RESONANCE ............................................................................................................................................................................................52
SLOW GEAR...................................................................................................................................................................................................53
DEFRETTER ...................................................................................................................................................................................................54
TOUCH WAH .................................................................................................................................................................................................55
S-BEND ..........................................................................................................................................................................................................56
WAH ..............................................................................................................................................................................................................57
PEDAL BEND .................................................................................................................................................................................................58
FOOT VOLUME..............................................................................................................................................................................................59
NOISE SUPPRESSOR .....................................................................................................................................................................................60
DIVIDER/MIXER.............................................................................................................................................................................................61

Table of contents
3
SEND/RETURN ..............................................................................................................................................................................................63
PHRASE LOOP ............................................................................................................................................................................................... 65
X-BASS COMPRESSOR..................................................................................................................................................................................66
BASS OVERDRIVE .........................................................................................................................................................................................67
X BASS OVERDRIVE ......................................................................................................................................................................................68
BASS DISTORTION........................................................................................................................................................................................69
BASS METAL DISTORTION ...........................................................................................................................................................................70
BASS FUZZ ....................................................................................................................................................................................................71
AIRD BASS PREAMP......................................................................................................................................................................................72
BASS CHORUS...............................................................................................................................................................................................73
BASS FLANGER ............................................................................................................................................................................................. 74
PRIME BASS FLANGER..................................................................................................................................................................................75
BASS PHASER................................................................................................................................................................................................76
PRIME BASS PHASER ....................................................................................................................................................................................77
BASS PITCH SHIFTER ....................................................................................................................................................................................78
BASS HARMONIST ........................................................................................................................................................................................79
BASS OCTAVE ...............................................................................................................................................................................................81
BASS SLOW GEAR .........................................................................................................................................................................................82
BASS DEFRETTER..........................................................................................................................................................................................83
BASS TOUCH WAH........................................................................................................................................................................................84
BASS S-BEND ................................................................................................................................................................................................85
BASS WAH.....................................................................................................................................................................................................86
BASS PEDAL BEND........................................................................................................................................................................................87
MASTER.........................................................................................................................................................................................................88
Effects that can be placed, and upper limit on functional devices ...........................................................................................................89
CTL/EXP ............................................................................................................................................................................................................91
CONTROL FUNCTION ...................................................................................................................................................................................91
ASSIGN SETTING...........................................................................................................................................................................................95
TARGET list ............................................................................................................................................................................................................................................. 98
About the Range of a Target’s Change.......................................................................................................................................................................................110
About the Range of a Controller’s Change ...............................................................................................................................................................................112
Virtual Expression Pedal System (Internal Pedal / Wave Pedal) .........................................................................................................................................113
KNOB SETTINGS..........................................................................................................................................................................................115
MEMORY MIDI ............................................................................................................................................................................................116
MENU...............................................................................................................................................................................................................117
CONTROL MODE.........................................................................................................................................................................................117
HARDWARE SETTINGS ...............................................................................................................................................................................118
AMP CONTROL....................................................................................................................................................................................................................................118
EXP HOLD .............................................................................................................................................................................................................................................118
PEDAL CALIBRATION ........................................................................................................................................................................................................................118
LCD BRIGHTNESS ...............................................................................................................................................................................................................................118
AUTO OFF .............................................................................................................................................................................................................................................118
Bluetooth..............................................................................................................................................................................................................................................119
LOCK.......................................................................................................................................................................................................................................................119
PLAY OPTION..............................................................................................................................................................................................120
TUNER .........................................................................................................................................................................................................121
MIDI.............................................................................................................................................................................................................123
MIDI SETTING.......................................................................................................................................................................................................................................123
PROGRAM MAP BANK1–BANK3.................................................................................................................................................................................................... 124
USB ..............................................................................................................................................................................................................125
FACTORY RESET..........................................................................................................................................................................................126
IN/OUT SETTINGS ........................................................................................................................................................................................127
INPUT SETTINGS.........................................................................................................................................................................................127
OUTPUT SELECT .........................................................................................................................................................................................129
GLOBAL EQ .................................................................................................................................................................................................130
OUTPUT SETTING .......................................................................................................................................................................................131
WRITE...............................................................................................................................................................................................................132
WRITE (Saving to Memory) ........................................................................................................................................................................132
EXCHANGE (Exchanging Memories) .........................................................................................................................................................134

Table of contents
4
INITIALIZE (Initializing a Memory) ............................................................................................................................................................136
INSERT (Inserting a Memory).....................................................................................................................................................................138
Sound List ......................................................................................................................................................................................................140

EFFECTS
5
EFFECTS
COMPRESSOR
Chain
Palette
This is an effect that produces a long sustain by evening out the volume level of the input signal.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
BOSS
COMP
This models a BOSS CS-3.
D-COMP
This models a MXR DynaComp.
ORANGE
This is modeled on the sound of the Dan Armstrong ORANGE SQUEEZER.
SUSTAIN
0–100
Adjusts the range (time) over which low-level signals are boosted. Larger values will result in longer
sustain.
ATTACK
0–100
Adjusts the strength of the picking attack when the strings are played.
LEVEL
0–100
Adjusts the volume.
TONE
-50–+50
This adjusts the tone.
DIRECT
MIX
0–100
Adjusts the volume of the direct sound.
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.

EFFECTS
6
X-COMPRESSOR
Chain
Palette
This uses MDP (Multi-Dimensional Processing) to obtain a consistently natural playing feel and sound that responds to the pitch
range and dynamics of your phrase.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
SUSTAIN
0–100
Adjusts the range (time) over which low-level signals are boosted. Larger values will result in longer
sustain.
ATTACK
0–100
Adjusts the strength of the picking attack when the strings are played.
LEVEL
0–100
Adjusts the volume.
TONE
-50–+50
This adjusts the tone.
RATIO
1:1–
INF:1
Selects the compression ratio.
DIRECT
MIX
0–100
Adjusts the volume of the direct sound.
What is MDP (Multi-Dimensional Processing)?
MDP is a technology for analyzing an input signal from many different angles and instantly breaking it down into its respective
components. This unique Roland technology makes it possible to realize an unprecedented level of expressiveness, by applying
multi-dimensional effect processing to each of these audio components simultaneously and then actively altering them according
to the input signal.

EFFECTS
7
BOOSTER
Chain
Palette
This is an effect that amplifies the signal to raise the volume or to add distortion.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
MID
BOOST
This is a booster with unique characteristics in the midrange.
Making the connection before the AIRD PREAMP produces sound suitable for solos.
CLEAN
BOOST
This not only functions as a booster, but also produces a clean tone that has punch even when used
alone.
TREBLE
BOOST
This is a booster that has bright characteristics.
BOOST
0–120
Adjusts the depth of distortion.
TONE
-50–+50
Adjusts the tone.
LEVEL
0–100
Adjusts the volume of the effect sound.
BOTTOM
-50–+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a
sound with the low end cut; turning it to the right boosts the low end in the sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF, ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.

EFFECTS
8
OVERDRIVE
Chain
Palette
This effect distorts the sound to create long sustain. This produces mild distortion.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
NATURAL
OD
This is an overdrive sound that provides distortion with a natural feeling.
WARM OD
This is a warm overdrive.
BLUES OD
This is a crunch sound of the BOSS BD-2.
This produces distortion that faithfully reproduces the nuances of picking.
OD-1
This models the sound of the BOSS OD-1.
This produces sweet, mild distortion.
CRUNCH
A lustrous crunch sound with an added element of amp distortion.
T-SCREAM
This models an Ibanez TS-808.
TURBO OD
This is the high-gain overdrive sound of the BOSS OD-2.
CENTA OD
This models a KLON CENTAUR.
DRIVE
0–120
Adjusts the depth of distortion.
TONE
-50–+50
Adjusts the tone.
LEVEL
0–100
Adjusts the volume of the effect sound.
BOTTOM
-50–+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a
sound with the low end cut; turning it to the right boosts the low end in the sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF, ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.

EFFECTS
9
X OVERDRIVE
Chain
Palette
This is an overdrive that uses MDP to obtain the distortion that’s most appropriate in each pitch range.
Parameter
Value
Explanation
ON/OFF
OFF,
ON
Turns this effect on/off.
DRIVE
0–120
Adjusts the depth of distortion.
TONE
-50–
+50
Adjusts the tone.
BOTTOM
-50–
+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a sound
with the low end cut; turning it to the right boosts the low end in the sound.
LEVEL
0–100
Adjusts the volume of the effect sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF,
ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.

EFFECTS
10
DISTORTION
Chain
Palette
This effect distorts the sound to create long sustain.
Parameter
Value
Explanation
ON/OFF
OFF,
ON
Turns this effect on/off.
TYPE
DIST
This gives a basic, traditional distortion sound.
A-DIST
This uses MDP technology to obtain ideal distortion in all ranges of the guitar, from low to high.
FAT DS
A distortion sound with thick distortion.
LEAD
DS
Produces a distortion sound with both the smoothness of an overdrive along with a deep distortion.
RAT
This models a Proco RAT.
GUV
DS
This models a Marshall GUV’NOR.
DIST+
This models a MXR DISTORTION+.
DRIVE
0–120
Adjusts the depth of distortion.
TONE
-50–
+50
Adjusts the tone.
LEVEL
0–100
Adjusts the volume of the effect sound.
BOTTOM
-50–
+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a sound
with the low end cut; turning it to the right boosts the low end in the sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF,
ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.

EFFECTS
11
X DISTORTION
Chain
Palette
This is a distortion that uses MDP to obtain the distortion that’s most appropriate in each pitch range.
Parameter
Value
Explanation
ON/OFF
OFF,
ON
Turns this effect on/off.
DRIVE
0–120
Adjusts the depth of distortion.
TONE
-50–
+50
Adjusts the tone.
BOTTOM
-50–
+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a sound
with the low end cut; turning it to the right boosts the low end in the sound.
LEVEL
0–100
Adjusts the volume of the effect sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF,
ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.

EFFECTS
12
METAL DISTORTION
Chain
Palette
This is distortion sound that is ideal for performances of heavy riffs.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
METAL
DS
This is distortion sound that is ideal for performances of heavy riffs.
METAL
ZONE
This models the sound of the BOSS MT-2.
It produces a wide range of metal sounds, from old style to slash metal.
HM-2
This models the sound of the BOSS HM-2.
It produces distinctive cranked-up distortion sound with compression.
METAL
CORE
This models the sound of the BOSS ML-2.
The effect lets you create the optimal sound for playing high-speed metal riffs.
DIST
0–120
Adjusts the depth of distortion.
TONE
-50–+50
Adjusts the tone.
LEVEL
0–100
Adjusts the volume of the effect sound.
BOTTOM
-50–+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a
sound with the low end cut; turning it to the right boosts the low end in the sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF, ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.

EFFECTS
13
FUZZ
Chain
Palette
This is an effect unit that gives an extreme distortion sound.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
OCT
FUZZ
A fuzz sound with rich harmonic content.
‘60S
FUZZ
This models a FUZZFACE.
It produces a fat fuzz sound.
MUFF
FUZZ
This models an Electro-Harmonix Big Muff π.
FUZZ
0–120
Adjusts the depth of distortion.
TONE
-50–+50
Adjusts the tone.
LEVEL
0–100
Adjusts the volume of the effect sound.
BOTTOM
-50–+50
Adjusts the tone for the low frequency range. Turning this to the left (counterclockwise) produces a
sound with the low end cut; turning it to the right boosts the low end in the sound.
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
SOLO SW
OFF, ON
Switches to a tone that is suitable for solos.
SOLO
LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.

EFFECTS
14
AIRD PREAMP
Chain
Palette
This is an amp that uses BOSS’s proprietary cutting-edge AIRD (Augmented Impulse Response Dynamics) technology to simulate
every detail of a guitar amp as a unified instrument, including the response and operation of the guitar amp’s circuit and the
interactions between all parts that affect the sound.
*Up to two AIRD PREAMPs can be placed in the effect chain.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
Refer to 1.10.1. AIRD PREAMP TYPE List(P.14).
GAIN
0–120
Adjusts the distortion of the amp.
LEVEL
0–100
Adjusts the volume of the entire preamp.
*Be careful not to raise the Level setting too high.
GAIN SW
LOW, MID, HIGH
Provides for selection from three levels of distortion: LOW, MIDDLE, and HIGH. Distortion will
successively increase for settings of LOW, MIDDLE and HIGH.
*The sound of each Type is created on the basis that the Gain is set to MIDDLE.
BASS
0–100
Adjusts the low frequency range tone.
MIDDLE
0–100
Adjusts the midrange balance.
TREBLE
0–100
Adjusts the high frequency range tone.
PRESENCE
0–100
Adjusts the balance in the extended upper range.
SOLO SW
OFF, ON
Switches to a tone that is suitable for solos.
SOLO LEVEL
0–100
Adjusts the volume level when the SOLO SW is ON.
BRIGHT SW
OFF, ON
Turns the bright setting on/off.
*The BRIGHT setting is available only when certain AIRD PREAMP TYPE settings are
selected.
SAG
-10–+10
Adjusts the amount by which compression changes in response to the power amp.
RESONANCE
-10–+10
Adjusts the amount by which dynamics is affected by the interaction between the power amp
and the speaker transformer.
SP TYPE
Refer to 1.10.2. SP TYPE List(P.15).
DIRECT MIX
0–100
Adjusts the volume of the direct sound.
MIC TYPE
Refer to 1.10.3. MIC TYPE List(P.15).
MIC
DISTANCE
SHORT,
MEDIUM, LONG
Simulates the distance between the mic and speaker.
The distance from the speakers is farther in the order of SHORT<MEDIUM<LONG.
MIC
POSITION
CENTER
Simulates the condition that the mic is set in the middle of the speaker cone.
1 cm–10 cm
Simulates the condition that the mic is moved away from the center of the speaker cone.
MIC LEVEL
0–100
Adjusts the volume of the mic.
AIRD PREAMP TYPE List
Value
Explanation
TRANSPARENT
An amp with a broad frequency range and an extremely flat response. Good for acoustic guitar.
NATURAL
An unembellished, clean sound that minimizes the amp’s idiosyncrasies, such as its trebly character and boomy
low end.
BOUTIQUE
Crunch sound that allows the nuances of your picking to be expressed even more faithfully than on
conventional combo amps.
SUPREME
Great-feeling crunch sound that responds to the nuances of your picking while taking advantage of the
distinctive character of a 4x12” speaker cabinet.
MAXIMUM
An amp that delivers the distinctively great response and tone of a vintage Marshall, while making it even
higher gain.

EFFECTS
15
Value
Explanation
JUGGERNAUT
A large stack sound that has been tweaked extensively in the pursuit of the ultimate metal sound.
X-CRUNCH
Crunch sound that uses MDP to deliver a crisp tone from all strings.
X-HI GAIN
High-gain sound that uses MDP to obtain high-gain sound with a wide range and a great-feeling sense of
separation.
X-MODDED
Core sound that uses MDP to preserve the definition of the sound even with extreme gain.
JC-120
This models the sound of the Roland JC-120.
TWIN COMBO
This models a Fender Twin Reverb.
DELUXE
COMBO
This models a Fender Deluxe Reverb.
TWEED COMBO
This models a Fender Bassman 4x10” Combo.
DIAMOND AMP
This models a VOX AC30.
BRIT STACK
This models a Marshall 1959.
RECTI STACK
Models the sound of the Channel 2 MODERN Mode on the MESA/Boogie DUAL Rectifier.
MATCH
COMBO
This models the sound input to left input on a Matchless D/C-30.
BG COMBO
This models the sound of the MESA/Boogie combo amp.
ORNG STACK
This models the dirty channel of an ORANGE ROCKERVERB.
BGNR UB
METAL
This models the sound that models the high-gain channel of a Bogner Uberschall.
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.
SP TYPE List
Value
Explanation
OFF
This turns off the speaker simulator.
ORIGINAL
This is the built-in speaker of the amp you selected with AIRD PREAMP TYPE(P.14) .
1x8”
This is a compact open-back speaker cabinet with one 8-inch speaker.
1x10”
This is a compact open-back speaker cabinet with one 10-inch speaker.
1x12”
This is a compact open-back speaker cabinet with one 12-inch speaker.
2x12”
This is a general open-back speaker cabinet with two 12-inch speakers.
4x10”
This is an optimal speaker cabinet for a large enclosed amp with four 10-inch speakers.
4x12”
This is an optimal speaker cabinet for a large enclosed amp with four 12-inch speakers.
8x12”
This is a double stack of two cabinets, each with four 12-inch speakers.
B1x15”
This is a compact open-back speaker cabinet with one 15-inch speaker.
B1x18”
This is a compact open-back speaker cabinet with one 18-inch speaker.
B2x15”
This is a general open-back speaker cabinet with two 15-inch speakers.
B4x10”
This is an optimal speaker cabinet for a large enclosed amp with four 10-inch speakers.
B8x10”
This is a double stack of two cabinets, each with four 10-inch speakers.
USER1–16
You can create an original SP TYPE by using a dedicated tool to load IR (Impulse Response) data into the GX-100.
Download the dedicated tool from the BOSS website.
http://www.boss.info/support/
MIC TYPE List
Value
Explanation
DYN57
This models the sound of the SHURE SM57. General dynamic mic used for instruments and vocals. Optimal for use in
miking guitar amps.
DYN421
This models the sound of the SENNHEISER MD-421. Dynamic mic with extended low end.
CND451
This models the sound of the AKG C451B. Small condenser mic for use with instruments.
CND87
This models the sound of the NEUMANN U87. Condenser mic with flat response.
FLAT
Simulates a mic with perfectly flat response. Produces a sonic image close to that of listening to the sound directly from
the speakers (on site).
*Company names and product names appearing in this document are registered trademarks or trademarks of their respective
owners.

EFFECTS
16
PARAMETRIC EQUALIZER
Chain
Palette
This adjusts the tone. You can adjust the sound character in four bands.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
LOW GAIN
-20–+20 dB
Adjusts the low frequency range tone.
HIGH GAIN
-20–+20 dB
Adjusts the high frequency range tone.
LEVEL
-20–+20 dB
Adjusts the overall volume level of the equalizer.
LOW-MID
FREQ
20.0 Hz–12.5 kHz
Specifies the center of the frequency range that will be adjusted by the LOW-MID GAIN.
LOW-MID Q
0.5–16
Adjusts the width of the area affected by the EQ centered at the LOW-MID FREQ. Higher
values will narrow the area.
LOW-MID
GAIN
-20–+20 dB
Adjusts the low-middle frequency range tone.
HIGH-MID
FREQ
20.0 Hz–12.5 kHz
Specifies the center of the frequency range that will be adjusted by the HIGH-MID GAIN.
HIGH-MID Q
0.5–16
Adjusts the width of the area affected by the EQ centered at the HIGH-MID FREQ. Higher
values will narrow the area.
HIGH-MID
GAIN
-20–+20 dB
Adjusts the high-middle frequency range tone.
LOW CUT
FLAT, 20.0 Hz–
12.5 kHz
Sets the frequency at which the low cut filter begins to take effect. When “FLAT” is selected,
the low cut filter has no effect.
HIGH CUT
20.0 Hz–12.5 kHz,
FLAT
Sets the frequency at which the high cut filter begins to take effect. When “FLAT” is selected,
the high cut filter has no effect.

EFFECTS
17
GRAPHIC EQUALIZER
Chain
Palette
This adjusts the tone. You can adjust the sound character in ten bands.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
31.5 Hz
-20–+20 dB
Adjust the volume of each frequency band.
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
16 kHz
LEVEL
-20–+20 dB
Adjusts the overall volume level of the equalizer.

EFFECTS
18
CHORUS
Chain
Palette
This is an effect that adds a slightly modulated sound to the direct signal, creating beautiful spaciousness and depth.
MONO/STEREO
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
TYPE
Selection for the chorus mode.
MONO
This chorus effect outputs the same sound from both L channel and R channel.
DIR/EFX
This stereo chorus uses spatial synthesis, with the direct sound output in the L channel and the
effect sound output in the R channel.
STEREO
This is a stereo chorus effect that adds different chorus sounds to L channel and R channel.
DUAL
This lets you apply chorus independently to the L and R channels.
RATE
0–100, BPM
ŀ–Ō
Adjusts the rate of the chorus effect.
*When set to BPM, the value of each parameter will be set according to the value of the
“MASTER BPM” specified for each memory. This makes it easier to achieve effect sound
settings that match the tempo of the song.
*If, due to the tempo, the time is longer than the range of allowable settings, it is then
synchronized to a period either 1/2 or 1/4 of that time.
DEPTH
0–100
Adjusts the depth of the chorus effect. To use this as a doubling effect, set this to “0”.
EFFECT
LEVEL
0–100
Adjusts the volume of the effect sound.
PRE-DELAY
0.0 ms–40.0
ms
Adjusts the time needed for the effect sound to be output after the direct sound has been output.
By setting a longer pre delay time, you can obtain an effect that sounds like more than one sound is
being played at the same time (doubling effect).
WAVEFORM
TRI
Produces a typical chorus effect.
SINE
Produces a deeper sense of modulation.
LOW CUT
FLAT, 20.0
Hz–12.5 kHz
Sets the frequency at which the low cut filter begins to take effect. When “FLAT” is selected, the low
cut filter has no effect.
HIGH CUT
20.0 Hz–12.5
kHz, FLAT
Sets the frequency at which the high cut filter begins to take effect. When “FLAT” is selected, the
high cut filter has no effect.
DIRECT
LEVEL
0–100
Adjusts the volume of the direct sound.
Setting this to “0” cuts the direct sound.
BPM
40–250
Adjusts the BPM value for each memory.
*BPM (beats per minute) indicates the number of quarter note beats that occur each minute.

EFFECTS
19
Parameter
Value
Explanation
*When you have an external MIDI device connected, the MASTER BPM synchronizes to the
external MIDI devices tempo, making it impossible to set the MASTER BPM. To enable setting
of the MASTER BPM, set “SYNC CLOCK” to “INTERNAL”.
DUAL
Parameter
Value
Explanation
1: RATE
2: RATE
0–100, BPM
ŀ–Ō
Adjusts the rate of the chorus effect.
*When set to BPM, the value of each parameter will be set according to the value of the
“MASTER BPM” specified for each memory. This makes it easier to achieve effect sound
settings that match the tempo of the song.
*If, due to the tempo, the time is longer than the range of allowable settings, it is then
synchronized to a period either 1/2 or 1/4 of that time.
1: DEPTH
2: DEPTH
0–100
Adjusts the depth of the chorus effect. To use this as a doubling effect, set this to “0”.
1: EFFECT
LEVEL
2: EFFECT
LEVEL
0–100
Adjusts the volume of the effect sound.
1: PRE-DELAY
2: PRE-DELAY
0.0 ms–40.0
ms
Adjusts the time needed for the effect sound to be output after the direct sound has been output.
By setting a longer pre delay time, you can obtain an effect that sounds like more than one sound is
being played at the same time (doubling effect).
1:
WAVEFORM
2:
WAVEFORM
TRI
Produces a typical chorus effect.
SINE
Produces a deeper sense of modulation.
1: LOW CUT
2: LOW CUT
FLAT, 20.0
Hz–12.5 kHz
Sets the frequency at which the low cut filter begins to take effect. When “FLAT” is selected, the low
cut filter has no effect.
1: HIGH CUT
2: HIGH CUT
20.0 Hz–12.5
kHz, FLAT
Sets the frequency at which the high cut filter begins to take effect. When “FLAT” is selected, the
high cut filter has no effect.
OUTPUT
MODE
MONO
This setting is appropriate for mono output.
STEREO
Produces a rich spaciousness when stereo output is used.
DIRECT
LEVEL
0–100
Adjusts the volume of the direct sound.
Setting this to “0” cuts the direct sound.
BPM
40–250
Adjusts the BPM value for each memory.
*BPM (beats per minute) indicates the number of quarter note beats that occur each minute.
*When you have an external MIDI device connected, the MASTER BPM synchronizes to the
external MIDI devices tempo, making it impossible to set the MASTER BPM. To enable setting
of the MASTER BPM, set “SYNC CLOCK” to “INTERNAL”.

EFFECTS
20
PRIME CHORUS
Chain
Palette
This is BOSS’s proprietary chorus sound. It provides spaciousness and depth that were not previously obtainable.
Parameter
Value
Explanation
ON/OFF
OFF, ON
Turns this effect on/off.
RATE
0–100, BPM
ŀ–Ō
Adjusts the rate of the chorus effect.
*When set to BPM, the value of each parameter will be set according to the value of the
“MASTER BPM” specified for each memory. This makes it easier to achieve effect sound
settings that match the tempo of the song.
*If, due to the tempo, the time is longer than the range of allowable settings, it is then
synchronized to a period either 1/2 or 1/4 of that time.
DEPTH
0–100
Adjusts the depth of the chorus effect. To use this as a doubling effect, set this to “0”.
EFFECT
LEVEL
0–100
Adjusts the volume of the effect sound.
PRE-DELAY
0.0 ms–40.0
ms
Adjusts the time needed for the effect sound to be output after the direct sound has been output.
By setting a longer pre delay time, you can obtain an effect that sounds like more than one sound is
being played at the same time (doubling effect).
WAVEFORM
TRI
Produces a typical chorus effect.
SINE
Produces a deeper sense of modulation.
LOW CUT
FLAT, 20.0
Hz–12.5 kHz
Sets the frequency at which the low cut filter begins to take effect. When “FLAT” is selected, the low
cut filter has no effect.
HIGH CUT
20.0 Hz–12.5
kHz, FLAT
Sets the frequency at which the high cut filter begins to take effect. When FLAT is selected, the high
cut filter has no effect.
SWEETNESS
0–100
Higher values produce a more enveloping sound.
BELL
0–100
Higher values produce a more brilliant sound.
OUTPUT
MODE
MONO
This setting is appropriate for mono output.
STEREO
Produces a rich spaciousness when stereo output is used.