Blue Fool - MXR Blue Box+

From the vendor

Bit of a strange one, this. A fuzz box with a blendable 2-octave down note. Quite a glitchy affair (if you want clean octave-down you'd better head into digital land), but pretty damn good. Great for fattening up riffs and solo notes. The original maxes out at around unity gain, so FuzzDog Labs have included a post-boost to make it more useable and generally lovely. You can also flick between one or two octaves down which makes this a lot more versatile, though you can hardwire it for either and ditch the switch if you prefer. The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. Famously used on Led Zeppelin's Fool in the Rain (hence the name of the kit). Those funky friends of FuzzDog, LongFallBoots, have a demo vid right here 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. Please choose appropriate knobs. Inspired by: Blue Box Difficulty: Medium PCB size: 50 x 45mm Knobs required: 2 Enclosure: 1590B Direct Connect compatible (4-way) Download INSTRUCTION PDF