Marshall JMP-1
I actually got 2 af these preamps. The one lost its midi control interface så i was unable to control it from the midiboard pedal.
It works fine manually though. The one listed in pices below is the newest one i got.
The tubes has been replaces (original Marshall ECC83/81 pre-amp tubes with Grove Tubes GT12AX7R ECC 83/7025)
The one tube is used for clean sound and the other for overdrive (OD1/2) sound
(if one blowes, you can either only use the clean or the OD1/2 channel )
Hit the pics for larger pics
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