JMP/2203/2204 ST1 Circuit Board


Please note: USPS First Class, Priority Mail, or UPS are the only acceptable shipping methods. Small Rate, Region A, or other boxes will not facilitate this board.

Finally, an updated modern reproduction inspired by the Marshall™ ST1 printed circuit board that was used in the 70's JMP and Master Volume amps, and into the JCM800 2203/2204 amps. We've matched the original design, both top silkscreen and bottom trace side, but all holes are through-plated, for a 2 layer board that's usable for a new install/build, or replacement in a vintage era amp. We've also added additional holes and pads to allow various electrolytic capacitors for preamp stage filtering when the "middle of chassis" punch out is not available, and we've added extra holes for mounting either radial box type or axial lead capacitors in the decoupling and EQ locations.

The standoff mounting holes match the original, so mounting is straightforward. There are additional solder pads with larger diameter plating - great for soldering in turrets for wiring a choke, and international PT primary voltage taps.

We intentionally left the component value references blank in the silkscreen print so that builders and techs can use whatever values they want.

This is a fantastic modern PCB that can be used in several different configurations.

Board dimensions:
298.4mm L x 80mm W
1.6mm H (thick), 1 Oz. copper

A working knowledge of tube amplifier schematics and component layout is required.

Marshall, ST1, JMP, and JCM800 are registered trademarks of Marshall Amplification PLC, and only used here for historical reference.

Add to Cart:

  • Model: ST1A_PCB
  • Shipping Weight: 0.1875lbs
  • 4 Units in Stock
  • Manufactured by: Granger

This product was added to our catalog on Monday 12 February, 2018.

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