Marshall JMP-1 - Hyde's review
Everything or almost everything has been said already. No need to add much, except that mine (bought secondhand to an AF user) has two jj tubes and came with the pedal that goes with the jmp1. UTILI…
Marshall JMP-1 - eldorum's review
Everything has been said already Just one defect: no input on the front panel. a pity UTILIZATION Very, very easy to use. Basic controls: bass, mid, treble, presence, and a bass boost that has…
Marshall JMP-1 - "Garbage"
Marshall has taken the biggest hold on the guitar amplifier world and completely pissed it down the drain. Sure people will still buy amps from them because they don't know what Marshall is now and t…
Marshall JMP-1 - moosers's review
The Marshall JMP-1 is a valve based guitar preamp, offering a single space rack mountable unit for use with electric guitar. It’s great for the home or professional studio owner who doesn’t necessar…
Marshall JMP-1 - MetallicRiffer's review
translatedGuitar preamp lights (but there must be a diode clipping somewhere) 4 MIDI channels 19 "1U 2 ECC83 for the clean and OD channel Assignable effects loop on each preset To see the rest of th…
Marshall JMP-1 - khronegon's review
translated- Prampli lamps (2 lamps). - Connectivity well complte: * Front: between guitar and headphones; * The rear: output effects loop (parallle), back left and right effects loop, left and right mai…
Marshall JMP-1 - jimiric90's review
translatedProgrammable preamp but everything is already explained in previous reviews! As a rule the 4 basic sounds are excellent, the texture of the guitars totally respected and the settings are identical …
Marshall JMP-1 - Judas's review
translatedTube preamp (12AX7 two, one for the Clean (V1), one for the saturation (V2). Please note that the saturation of the preamp is a saturation diode, lights are just there to color the sound (but we feel…
Marshall JMP-1 - Oli_34160's review
translatedFor specifications and review the original preamp, see below. On mine, I made the change, Dr. Boost (chgt condos on the audio line - sixty, ceramic films cons - chgts 15v regulators, amplifiers chgts…