2.3
Tubes
Each Supro tube amplifier is a 100% analog.
Power Tube
Preamp Tube
12AX7 / ECC83
6L6
5881
Output
Transformer
Power
Transformer
BLUES KING 12
INPUT
VOLUME
DRIVE
BOOST
TREBLE
MIDS
BASS
REVERB
MASTER
STANDBY
POWER
ON
ON
ABSARA AUDIO - NEW YORK
TM
2.4
Troubleshooting
Supro products have been designed for years of trouble free service. There are many unique protection
features to the design. If you are having difficulty, check the following:
No sound, but PILOT LIGHT is ON
Check to see that the speaker is plugged into the SPEAKER JACK (not the footswitch jack). Make
sure all knobs are turned up past zero and that the standby switch is set to operate. As this is a
tube amplifier, the tubes take approximately 1 minute to warm up before you will get sound. The
STANDBY switch should be set to standby for this warm up period.
No sound and the Lights are All OFF
Unplug the power cord and check the 3A,250V(100V-120V); 2A,250V(220V-240V) fuse.
If you have any further questions, our email address is
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