Razorback

If you like the sound of a Rat you're going to love this.

Poked with a pointy genius stick and tweaked to perfection, this boutique variation on the classic offers so much more it's almost a shame to reference the starting point.

Front-loaded with a Boner Boost, you can increase that input signal to breaking point before it hits the raspy rodent back end, offering a whole new dynamic range across the sweep of the gain control. It. Just. Works.

The original uses the unobtanium OPA604AP IC, but there's nothing incredible about that. We've tried it with a bunch of single op-amps and there's very little difference in them. We've settled on the TL071, but feel free to sub your own flavour.

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: Warthog

Difficulty: Medium

PCB size: 50 x 40mm

Knobs required: 4

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download the INSTRUCTION PDF