For sale is a used 1978 Marshall JMP 2203 MK2 100 Watt Tube Head. This amp is in good condition with typical dings and some wear in the Tolex. Besides being re-tolexed in purple and filter caps, everything appears to be original on this head including the Drake transformers. The tubes 6550 have plenty of life left in them. There are no issues with this head at all. These late 70's JMPs have a nice mid-tone distortion and the 6550 tubes really give it some punch. This is easily one of my favorite amps.