Supreaux Bolt

All the vintage amp tone fun of a 60's Supro in a 1590B.

Based on a boutique pedal which is itself based on the excellent RunOffGroove Supreaux, but with a couple of tweaks. This version offers a built-in charge pump to run the circuit at 18V instead of 9V, giving much more headroom. A Hi/Lo toggle switch emulates the Hi/Lo inputs of the amp, so giving you more dirt or more clean headroom on tap.

Overall, this is a fantastic open-sounding drive with a huge range of gain and tone control. Big thumbs-up to RunOffGroove. No mention of them on the 'boutique' site... shame on those people.

Board-mounted pots and switch make this a quick, simple build. Latest version has pads for through-hole or SMT FETs, since through-hole are getting harder to come by.

Please choose your knobs to suit the pot shaft you select in the options. The vertical-mount pots have round shafts, so require knobs that fit with a grub/set screw.

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 only available 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.

Difficulty: Medium

PCB size: 50 x 40mm

Knobs required: 3

Enclosure: 1590B

Direct-Connect compatible (4-way)

NOTE: You'll need a mutlimeter to bias the FETs in this circuit.



Pedal Parts


£37.20 inc. tax

£31.00 ex. tax
? Tax based on United Kingdom.

Customer Reviews

3 review(s) posted (write review)
Late 60s rock heaven. 5 product stars
"This overdrive is the bomb. It is quite literally an amp in a box, as originally the ROG site analysed the schematic of a Supro, as immortalised by Jimmy Page on Zeppelin 1. JHS may be guilty of stealing the idea and running with it, but nether the less it's truly great. With the 18v build you hear a greater difference between the two toggle switch modes, similar to the high and low peak switch on an OCD. One position has a more open sound with firmer attack response, whilst the other applies a compressed and chewy sag, which simulates a fully cranked vintage valve amp. I've just played along to Cream and Zeppelin with this pedal into my amp at TV volume with very satisfying results. When the gain is maxed, it's more like a fuzz/distortion, but used judiciously it really hits the spot. This has the same versatility as the OCD, going from clear open drive, to full on cranked tilt, but with more convincing amp overdrive full bodied low mids. For now, this is me fave. Thank goodness for Fuzz Dog PCBs for making cloning easier than vero builds. They really are the biz." Simon Wood - 10/03/2018
Supreaux - Superb Kit 5 product stars
"Another excellent kit - relatively easy, great instructions, worked first time. Tone into a recently refurbished WEM Clubman is magical." Nick Morgalla - 18/04/2017
Thunder Struck 5 product stars
"Great kit. Incredible pedal. Daughter card made build much easier and got me using the pedal sooner." Rich - 31/05/2015

Recently Viewed

Full kits DO NOT include enclosures unless you select them in the 'Kit Type' drop-down menu.

Don't forget to download the appropriate daughterboard build document for your kit:
Standard 3PDT