JMP/2203/2204 ST1 Circuit Board – Green

Our green ST1 printed circuit board was originally created to replace damaged or non-repairable ST1 boards. It has all the same component placements, traces, and mounting hole locations of the original. Most importantly, it is double-sided with though-hole plating (unlike the original, which was single-sided with thin copper and tiny solder pads). It can also be dual-purposed to use in any JTM/JMP/JCM/2203/2204/Plexi style amp build. It has extra component holes/pads for either box style or axial capacitors in the coupling caps placement positions, and has turret-sized holes on the supply/rectifier end for soldering or pressing in turrets as convenient voltage tap wiring, and for other wiring points (choke, screen supply, etc.)

Top side has component location (outlined) silkscreening. To facilitate multiple wiring/value options, component values are not printed. A perfect replacement board for vintage Marshall, Marshall-style amp, or any JMP/JCM800 style amp. Please note: No layout is provided. For component values and placement, use an internet search. There are plenty on online reference materials available.

Pricing and Options

(2 customer reviews)


28 in stock (can be backordered)

2 reviews for JMP/2203/2204 ST1 Circuit Board - Green

  1. Daniel Tramble

    Excellent board for restoring JMP amps and fits perfectly in existing hardware standoffs. Double sided is nice as when you want to change a component it is very quick and cleanly done without removing the board. Well done Curt! Folks, these boards are better than the originals!

  2. Sam Norman (verified owner)

    This is so awesome. I’ve been building point-to-point and decided to try this out for a more authentic JCM800. It’s so easy to solder and looks really clean.

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