JMP/2203/2204 ST1 Circuit Board – Green
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. More 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) silk-screening. 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 or schematic is provided. For component values and placement, use an internet search. There are plenty of online reference materials available.
Pricing and Options
$38.00
13 in stock (can be backordered)
13 in stock (can be backordered)
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.)
Brandon –
If you’ve ever worked on the infamous ST1 boards that Marshall (unfortunately still uses to this day) you know that if you even look at them wrong, the traces will lift. I have purchased multiple st1 clone boards from Granger amplification, and they are excellent. Super durable, can take the abuse of tweaking/tuning/swapping components for mods, etc. The quality of these boards are excellent, thick traces, and double sided pads make it extra simple to change out components. The pads take solder beautifully, and don’t mind heat from the iron. I have these boards in my 88 super lead, and 79 JMP. In fact, I am about to place an order for a couple more!
Curt Granger –
Thank you for the glowing review, Brandon! That was my intention when designing them, as I was also frustrated anytime I serviced those old boards.
BRYAN (verified owner) –
Just received my order of ST1 boards and I am very pleased with the quality! Nice fat solder pads, thick traces, excellent. I can’t wait to get started building.
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!
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.