Description
This 1978 JMP has an additional clean channel, the volume can be controlled by potentiometer.
The amp is in pretty good shape except for this modification and is fresh out of inspection.
The JMP was built from 1976 to 1981, after that the 2203 was built as JCM 800, with a new look, until 1989.
100 watt
4 x EL34
Master Volume
Model 2203