2 thoughts on “1976 Marshall Model #2104 JMP Master Volume”

1. I have one of these amps – modded with a master volume and EL34’s – and I jump the two channels – I got mine from Ray Spicer of Band of Gypsys – I was so lucky – today I got an expert lesson on how to really use this amp – I was a little stumpped as it was so Loud and I just used it when I could- but now I thing Ive tammed the beast?

   anyone know what this amp is worth today?

   Log in to Reply

   1. There’s a 1978 on eBay currently for around $2,000 USD,

      https://www.ebay.com/itm/Vintage-1978-Marshall-JMP-Master-Model-50w-MK-2-Lead-2×12-Valve-Amplifier-Combo/113935285918

      Log in to Reply