Tone Bender Pro MkII Inverter

All-time classic fuzz. Huge, smooth sounds available from this great circuit. Super-saturated lead tones, or great chord work with the guitar volume knocked back.

The choice of transistors will grow as more experimentation and fiddling goes on at FDHQ. There's plenty of room on the board to take the meatiest of vintage cans. Right now we're offering a combination of Russian germaniums and others we have in stock, Newmarket CV7007 (OC77), or you can have the kit without cans if you want to source your own.

You can even swap a couple of components and make yourself a Marshall Supa Fuzz (much fatter, bassier tone than stock) or a Vox Tone Bender MkII (slightly bassier, not a lot).

The circuit has board-mounted pots for minimal wiring and simple enclosure mounting.

Would qualify as easy but you need to adjust two trim pots to bias the transistors. A multimeter is recommended, though you can do it by ear.

This version of the board includes an onboard voltage inverter, so you can power the positive-ground circuit on a standard polarity supply. Neat huh?

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.

Inspired by: Tone Bender MkII

Difficulty: Easy-Medium

PCB size: 50 x 31mm

Knobs required: 2

Enclosure: 1590B

Direct-Connect compatible (4-way)

Check Specials for powder-coated enclosure availability.

Download the INSTRUCTION PDF