BOSS GT-PRO
Owner's Manual

Names of Things and What They Do
Front Panel
fig.002-010

23 1 3 4 20

24 25 26 21 22 27

28 29

2

5

6

7

8

9

10 11 12

30

13 14 15 16 17 18 19

1. INPUT
INPUT Jack
The guitar is connected here.

5. PREAMP/SPEAKER
TYPE Knob
Selects the preamp type.

INPUT LEVEL Knob
Adjusts the level of the signals input through the INPUT jacks (both front and rear).

GAIN Knob
Adjusts the degree of preamp distortion.

BASS Knob
Adjusts the sound quality of the preamp�s lowfrequency range.

PEAK Indicator
Indicates the status of the input level. This indicator lights at 6 dB before the level at which distortion begins.

MIDDLE Knob
Adjusts the sound quality of the preamp�s midrange frequency.

2. OUTPUT
PHONES Jack
Connect headphones here. * The output from the PHONES jack is a mix of the output from the MAIN OUT jacks and SUB OUT jacks.

TREBLE Knob

Adjusts the sound quality of the preamp�s highfrequency range.

PRESENCE Knob
Adjusts the sound quality of the preamp�s ultra high frequency range.

MAIN Volume Knob
Adjusts the volume level of the output from the MAIN OUT jacks.

LEVEL Knob
Adjusts the preamp volume level.

SUB Volume Knob

Adjusts the volume level of the output from the SUB OUT jacks (1/4� phone type). * The output from the SUB OUT (XLR type) connector is set at a fixed level, regardless of the position of the SUB volume knob.

PREAMP/SPEAKER On/Off Button
Press to change the settings.

TYPE VARIATION Button
Switches the type variation.

CHANNEL Button
This switches between preamp Channels A and B.

3. Display

A variety of information about the GT-PRO appears here. The left display shows the bank number.

SOLO Button
This switches the Solo switch (p. 29) on and off.

4. PATCH/VALUE Dial
Use this when switching patches and changing the values of settings.

SPEAKER Button

Selects the speaker type.

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