Range Boss

Beautifully beefy boost with tweakable bass response.

Designed to push your tube amp into new realms, this bad boy is a swiss army knife of grunt.

Add up to 25dB of boost with the gain control to push your tubes into overdrive, then clean it all up with your guitar volume pot. Frequency range not quite right? Twiddle your BALLS control to add or take out bottom end.

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: Tube Amp Doctor Range King

Difficulty: Easy

PCB size: 50 x 20mm

Knobs required: 2

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download the INSTRUCTION PDF