Blue Fool - MXR Blue Box+
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
BlueFoolKit
Pedal Parts
130.0g
New
