This JMP50 is a super early '76 (Jan, 5 to be precise) tone machine and circuit-wise excellent... original transformers, pots, mustard caps, filters, etc all look good and amp has been recently serviced for reliable...

An early 1970 Marshall JMP 100w Super Bass! This one is in very good condition and has received a fresh filter caps + service to do the job for many more years to come. Original circuit and pots are also excellent, as...

Killer sounding '69 Marshall plexi Super Bass 100! Fully serviced and recapped. Replacement Heyboer power transformer but otherwise mostly stock and sounding excellent...