
26
SYSTEM
OUTPUT SELECT
Specify the device (amp) that’s connected to the OUTPUT jacks.
Parameter Value Explanation
SELECT
JC-120
Choose this setting if the GT-100 is connected 
to the guitar input of a Roland JC-120 guitar 
amp.
SMALL AMP Choose this setting if the GT-100 is connected 
to a small guitar amp.
COMBO AMP
Choose this setting if the GT-100 is connected 
to the guitar input of a combo-type guitar 
amp (i.e., a single unit that contains the amp 
and speaker) other than the JC-120. 
For some types of guitar amps, the “JC-120” 
setting might produce better results.
STACK AMP
Choose this setting if the GT-100 is connected 
to the guitar input of a stack-type guitar amp 
(i.e., one in which the amp and speaker are 
separate units).
JC-120 RETURN Choose this setting if the GT-100 is connected 
to the RETURN jack of the JC-120.
COMBO RETURN
Choose this setting if the GT-100 is connected 
to the RETURN jack of a combo-type guitar 
amp.
STACK RETURN
Choose this setting if the GT-100 is connected 
to the RETURN jack of a stack-type guitar 
amp. You should also choose the “STACK 
RETURN” setting if you’re using a guitar 
power amp together with a speaker cabinet.
LINE/PHONES
Choose this setting if you’re using 
headphones, or if the GT-100 is connected to 
a keyboard amp, mixer, or digital recorder.
INPUT
Adjust the input level according to the output level of the guitar that
you’ve connected.
Parameter Value Explanation
INPUT LEVEL -20–+20 dB Adjusts the guitar input level.
GLOBAL EQ
This adjusts the tone of the OUTPUT regardless of the equalizer on/o
settings of individual patches.
Parameter Value Explanation
LOW GAIN -20–+20 dB Adjusts the low frequency range tone.
MID GAIN -20–+20 dB Adjusts the middle frequency range tone.
MID FREQ 20.0 Hz–10.0 kHz Species the center of the frequency range 
that will be adjusted by the MID GAIN.
MID Q 0.5–16
Adjusts the width of the area aected by the 
EQ centered at the MID FREQ. Higher values 
will narrow the area.
HIGH GAIN -20–+20 dB Adjusts the high frequency range tone.
TOTAL
These parameters control the threshold level of the noise suppressor used
by each patch, the overall reverb level, and the overall output. They do not
aect the settings of each patch.
Parameter Value Explanation
NS THRESH -20–+20 dB
Control the threshold level of the noise 
suppressor used by each patch. This does not 
aect the settings of each patch.
*  If you want to use the settings specied for 
each patch, set this to 0 dB.
REVERB 0–200%
Adjusts the reverb level specied for each 
patch.
It is useful to adjust the reverb level 
appropriately for the space in which you’re 
performing. This does not aect the settings 
of each patch.
*  If you want to use the settings specied for 
each patch, set this to 100 %.
MAIN 
OUTPUT 
LEVEL
-10 dB, +4 dB
Species the output reference level as 
appropriate for the input level of the device 
connected to the OUTPUT jacks.
PHRASE LOOP
Here are various settings for the Phrase Loop function.
Parameter Value Explanation
MODE
PERFORM
The sound processed by the eects will be 
recorded.
This lets you create a variety of performances 
by layering dierent sounds.
PATCH EDIT
The sound before being processed by the 
eects will be recorded, and the eects will 
be applied when the loop is played back.
This is a convenient way to adjust the eects, 
or to compare the sound of dierent patches.
REC MODE
MONO The phrase will be recorded in monaural 
(maximum 38 seconds).
STEREO The phrase will be recorded in stereo 
(maximum 19 seconds).
PLAY LEVEL 0–120 Species the phrase playback volume.
PEDAL FUNC
OFF Phrase Loop will not operate even if you 
press the [PHRASE LOOP] pedal.
PHRASE LOOP You can use the [PHRASE LOOP] pedal to 
switch Phrase Loop on/o or to record.
PLAY OPTION
Here you can specify how the pedals will work during performance.
Parameter Value Explanation
BANK 
CHANGE 
MODE
WAIT
Although the indication in the display is 
updated to reect the change in the bank 
when a BANK pedal is pressed, the patch will 
not change until a number pedal has been 
pressed.
IMMED The patch switches instantly when a BANK 
pedal or any of the number pedals is pressed.