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1. INPUT: Use this jack to connect your
guitar to the amplifier by means of a shield-
ed instrument cable.
OVERDRIVE CHANNEL:
A high gain channel
giving you sounds from a slight edge to seri-
ous overdrive.
2. GAIN: Use this control to adjust the amount
of distortion for the Overdrive channel.
3. LEVEL: Use this control to adjust the out-
put level of the Overdrive channel.
4. OVERDRIVE/CLEAN: Use this switch
to select the Overdrive or Clean channel.
With the switch in the out position, the Clean
channel is selected. When the switch is
depressed, the Overdrive channel is selected.
CLEAN CHANNEL:
A normal gain channel
designed to give you crystal clear sounds to
medium distortion.
5. VOL: Use this control to adjust the out-
put level of the Clean channel.
6. LOW: This adjusts the bass frequencies.
Use this control to get the best sounding
bass response for your instrument.
7. MID: This adjusts the midrange frequen-
cies. Use this control to get the best projec-
tion and midrange tones for your instrument.
8. HIGH: This adjusts the treble frequen-
cies. Use this control to attain a bright and
lively sound for your instrument.
9. REV LEVEL: Use this control to adjust
the level of the spring reverb effect.
10. CD INPUT: Use this 1/8" stereo mini
jack to connect the output from a CD player,
MP3 player, laptop, etc., to the amplifier.
The signal at this jack is summed into a
mono signal, which is sent to the internal
power amp circuit. Use the output level con-
trol for the signal source to adjust the signal
for the proper mix with your guitar.
Note: Depending on your CD player or other
signal source device, you may need to use an
adapter (i.e., two phono jacks to 1/8" stereo
plug), available at most electronic outlets.
11. HEADPHONES: Use this 1/8" stereo
jack to connect headphones to the amplifier.
The internal speaker is disconnected when
headphones are used.
Note: Depending on your headphones, you
may need to use a stereo 1/8" plug to 1/4"
jack headphone adapter, available at most
electronic outlets.
CAUTION: To avoid possible damage to your
hearing, do not use headphones for extend-
ed periods of time at extremely loud levels.
12. SPEAKER: Use this jack to connect
the amplifier to an external speaker. The
internal speaker is disconnected when this
jack is used. The impedance of the external
speaker must be 4 ohms or greater.
WARNING: Do not attempt to use head-
phones in the Speaker jack! Permanent
hearing damage could result!
13. POWER: Use this switch to turn the ampli-
f
ier on (top of the switch depressed) and off
(bottom of the switch depressed). The switch
illuminates when the amplifier is turned on.
14. POWER CORD (rear panel, not
shown): The grounded power cord should
only be plugged into a grounded power out-
let that meets all applicable electrical codes
and is compatible with the voltage, power,
and frequency requirements stated on the
rear panel. Do not attempt to defeat the
safety ground connection.
The Front Panel:
GTD15R Guitar Amplifier
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