eBay

here im s selling a very nice example of the classic marshall jmp-1 a compact 1u valve amp with that huge sound

uk volage 240v no converter needed then

it is in fully working order and has been checked over by a well known london tech

the valves are also in perfect condition see pics

unit can be picked up in south london or brighton

or to send insured

these units are in high demand sensible offers considered

for international buyers the postage is an estimate so send me your postcode please

thanks

The Marshall JMP-1 is a legendary 1U rackmount MIDI tube preamp that brings authentic Marshall tone into the world of programmable rigs. Combining two ECC83/12AX7 valves with digital control, it offers the warmth, dynamics, and punch of classic Marshall amplifiers with the flexibility of 100 fully programmable patches.

The JMP-1 features four fully independent channels—Clean 1, Clean 2, OD1, and OD2—covering everything from sparkling cleans to searing high-gain leads. Each patch can store gain, EQ, volume, and presence settings, allowing instant recall via front panel controls or MIDI. Stereo outputs, speaker-emulated outs, and an effects loop make it equally at home in the studio or on stage.

Key Features:

All-valve front end with 2x ECC83/12AX7 preamp tubes
4 programmable channels: Clean 1, Clean 2, OD1, OD2
100 user-programmable patches with MIDI in/out/thru
Stereo and speaker-emulated outputs for direct recording or live use
Programmable effects loop and MIDI mapping for seamless integration
1U rackmount design for professional rigs

Favoured by players from rock and metal to pop and fusion, the Marshall JMP-1 delivers the unmistakable Marshall roar in a compact, versatile format—perfect for modern guitarists who need both tone and control.