Marshall guitar amplifier

Marshall JMP Model 2104 Master Volume 50-Watt 2x12 Combo 1979 - Fully Serviced w/ Original Celestion G12-65 T3120 SpeakersCondition: Excellent/ Very Good

Up for sale a 1979 Marshall JMP Model 2104 Master Volume 50-Watt 2x12" combo. This is the highly sought-after, legendary late-70s Master Volume circuit that defined the sound of classic rock and heavy metal, built just before Marshall transitioned to the JCM800 badge.

Chassis Serial number ends in factory date code "L", officially verifying its 1979 UK production date.

Powered by its completely original pair of 1979 Rola Celestion G12-65 (Model T3120) drivers with the iconic gold Jim Marshall Products labels.

Speaker Date Codes: Stamped "LM13" (December 1979).

Freshly Fully Serviced (2026): The amp has just been meticulously benchmarked and safety-checked by a professional technician. Recapped for Safety. Brand-new modern replacement filter capacitors have been installed to guarantee optimal power delivery, a low noise floor, and safety for the original transformers.The circuit remains structurally pristine, fully operational, and completely ready for the stage or studio.

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