Marvellous Marshall

One of the very best Plexi boxes out there. Now that Ramble FX is no more (RIP Tim), these will start going for silly money on the second hand market, so beat the scalpers and build your own - with all profits from this kit going to our local animal shelter.

This does a great job of pushing those FETs to perfectly simulate pushed tubes, giving that unmistakable Marshall crunch. The beauty here is the ability to blend to channels - Normal and Treble, giving some very interesting voicings.

There's also a switch to push the circuit with 18V from your standard 9V supply, adding volume and headroom for a different feel.

Save a few pounds if you're happy with SMT soldering for the FETs. It's not too hard really. The PCB has been designed for 3mm resistors, but you can opt for 6mm and mount them vertically if the smaller ones sound a bit fiddly for you.

The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.

If you want the PCB without parts there's a link for that at the bottom of the page.

Partial kit: PCB, all board-mounted components, pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosures and vertical-mount pots. Please choose appropriate knobs.

Inspired by: Marvel Drive

Difficulty: Medium

PCB size: 50 x 50mm

Knobs required: 4

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download the INSTRUCTION PDF