Vary-Boost

Long since discontinued boost/pre-amp pedal. Boost or cut any frequency from 70Hz to 1400Hz. Love the sound of your Tube Screamer but don't love the mid hump quite so much? Pull it down. Your Eternity a little bright? Zap that top end. We could go on, but you get the idea.

This previously required a small hack but it's now been fixed.

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 enclosure and vertical-mount pots. Please choose appropriate knobs.

Inspired by: VarioBoost

Difficulty: Medium

PCB size: 50 x 50mm

Knobs required: 3

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download INSTRUCTION PDF