
24
Outputting SoundsSwitching the Unit On and O
Switching the Unit On
* Once everything is properly connected (p. 22), be sure to follow 
the procedure below to turn on their power. If you turn on 
equipment in the wrong order, you risk causing malfunction or 
equipment failure.
* Before turning the unit on/o, always be sure to turn the volume 
down. Even with the volume turned down, you might hear some 
sound when switching the unit on/o. However, this is normal 
and does not indicate a malfunction.
* This unit is equipped with a protection circuit. A brief interval (a 
few seconds) after turning the unit on is required before it will 
operate normally.
1. Press the GT-100’s [POWER] switch to turn on the power.
2. Turn on the power of the connected guitar amp.
Switching the Unit O
1. Before turning o the power, conrm the following.
• Have you minimized the volume of the connected equipment?
• Have you saved any patches containing settings that have been 
changed? “Saving a Patch (PATCH WRITE)” (p. 30)
2. Turn o the power of your guitar amp and any other 
connected equipment.
3. Hold down the GT-100’s [POWER] switch for several 
seconds to turn o the power.
Adjusting the Output Level
1. Adjust the GT-100’s output level with the [OUTPUT LEVEL] 
knob.
Specifying the Output Device
(Output Select)
You’ll need to specify the type of device (amp) that’s connected to 
the OUTPUT jacks. The GT-100 will apply an internal adjustment so 
that the output will sound optimal on the system you’re using.
Reference
For details on how to make this setting, refer to”Specify the type 
of amp you’ve connected” (p. 9)
Tuning the Guitar (TUNER)
1. Simultaneously press pedals [1] and [2].
The tuner function and the metronome function will turn on. The 
left display will show the “TUNER” screen.
2. Turn knob [1] to specify the reference pitch.
3. Turn knob [4] to specify how the guitar sound will be 
output while you’re using the tuner.
Parameter Value Explanation
[1] PITCH 435 Hz–445 Hz Species the reference pitch.
[4] OUTPUT
MUTE Sound will not be output 
while tuning.
BYPASS
While tuning, the sound of 
the guitar being input to the 
GT-100 will be output without 
change. All eects will be o.
THRU
Allows you to tune while 
hearing the current eect 
sound.
THRU
MUTE
BYPASS ON
OFF
EXP 
pedal
TUNER 
OUTPUT
TUNER
4. Play an unfretted note on the string that you want to 
tune, and tune the string until the desired note name is 
shown in the display.
5. While watching the screen, tune the string until only the 
middle indicator is lit.
Repeat steps 4–5 to tune all strings.
MEMO
If you’re tuning a guitar that’s equipped with a tremolo arm, 
tuning one string may cause other strings to drift. If so, start by 
tuning the strings approximately, so that the correct note names 
are displayed; then repeatedly tune each string until all strings 
are in tune.