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Marshall JMP-1 Tube MIDI Guitar Preamp

Sound Quality

Sound quality is just what you'd expect from a Marshall amp: lots of crunch and even tones. Noise is not an issue, unless the preamp is on maximum and you're playing at a loud volume level.


I've owned it since the mid 90s and have never had a problem with it (knock on wood...). I've consistently used it for gigs without a backup.

General Comments

The jmp1 is able to produce excellent rock sounds. It's ok for Fender-type sounds, although other amps are probably better for that. I've been a playing musician for over 20 years, and have had other amps in the past (ADA mp-1, Marshall 50-watt head). I've recently tried the Boss GT-8 and other guitar processors, but the jmp-1 delivers the tube sound I prefer. I'm soon going to be adding a G-major by TC Elec. as an effects unit. Current set-up: Les Paul Custom > Marshall JMP-1 > ART Multiverb > Marshall 8008 power amp > 2 X 2-12s cabinets.

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