-3-
Front panel controls.
POWER
-
Switch for turning on the ampli er.
STANDBY
The toggle switching of the anode voltage.
-
Turns on 5-15 minutes after turning on the POWER toggle switch.
PRESENCE
-
Presence adjustment. Works on all channels.
BASS
B
HB
-
Bass control for channels and
.
MID
B
HB
- Middle
control for channels and
.
TREBLE
B
HB
- Treble
control for channels and
.
MASTER
B
HB
-
Volume control for channels and
.
GAIN
B
HB
- Gain control for channels
and
.
BASS
CLEAN
- Bass control for channel
.
FAT
B
HB
-
Toggle switch into a "fat" mode for the channels and
.
SAT
- Add gain, compression and saturation. This is a heavier tone.
It is normal for the volume level to drop with this switch engaged. Compensate with the amp’s
Master volumes.
JTM
B
HB
-
Gain structure switch provides three choices of overall gain of the and
channels.
HB - B - CL
-
A toggle switch for switching ampli er channels.
The
indicator shows which the channel is currently on.
CH
When using FootSwitch (rear panel socket) toggle switch does not function.
TREBLE
CLEAN
- Treble control for channel
.
VOLUME
CLEAN
- Volume control for channel
.
GAIN
CLEAN
- Gain control for channel
.
INPUT
- Guitar input.
CH
- S
elected channel indicator.
Green - channel CLEAN -
CL
Blue - channel BROWN SOUND -
B
Red - HIGH GAIN -
HB
Summary of Contents for OP 50
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