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What the retailer says:

"The Marshall JMP1 1-Watt all valve amplifiers are one of a limited number of Anniversary guitar combos released to commemorate Marshall Amplifications 50th year of production. Marshall JMP1 combo amplifier is the first in a series of 4 models, designed to cover the tonal variations of Marshall amps spanning the early 60's right up to present day with the JVM models.

"JMP1 model captures that crunchy 70's rock tone perfectly, having a touch more gain than the JTM model and features a gain boost switch on the rear panel. Despite their modest power rating these small amplifiers sound huge, and a 0.1 watt setting enables you to crank it right up for a full on plexi experience!"

Buy from Soundslive

Marshall 1970s JMP1 (Ex-Display) for £521.80 from Soundslive and save £67.20 - Free UK delivery