Keeley
Keeley 1962
Take a Blues Breaker and mash it between two Katana boosts and you have the 1962. Couple minor differences from a typical Blues Breaker beyond that. Trace over on FSB. There are two versions of this circuit, the 1962 and the 1962x. As far as I can tell, the only difference between the two is … Read more
Keeley Rotten Apple
Happy Fuzz Friday, everyone! Here’s another one of Robert Keeley’s takes on the IC Big Muff with a quad opamp (the other being the Psi Fuzz). Pots are board mounted and it should fit into a 1590B.
Boss DS-1 with Keeley Ultra Mods
Got a request for the classic DS-1 with some Keeley mods and since my earlier DS-1 layout doesn’t have board mounted pots, it seemed like a good idea. The flip-flop switching has been removed. Here’s the schematic for reference.
Keeley Psi Fuzz
Happy Fuzz Friday, everybody. The Psi Fuzz is an IC/germanium hybrid fuzz. It takes some inspiration from the IC Big Muff, but with Keeley’s own distinct design touches. Schematic can be found here.
Keeley 4-Knob Compressor
The Keeley 4-Knob Compressor is a modified Ross Compressor and is highly regarded in the stompbox world. It’s only down side is the use of the obsolete CA3080 chip. These can be hard to find and a little pricy. However if you’re unable to find one, or unwilling to pay for one, use the LM13700 … Read more
Keeley Katana
The Katana is a highly regarded clean boost pedal that can give a nice clean boost or push your tube amp into breakup. The circuit itself is fairly simple, but achieves extra headroom thanks to the internal voltage doubler. For this you can use a ICL7660 or MAX1044. You may want to socket the two … Read more
Keeley Fuzz Head
Over a decade ago Robert Keeley was kind enough to share this design with the DIY community. It’s a fairly unique fuzz, with a germanium treble booster at the beginning, a differential amplifier in the middle, and a basic buffer at the output (this is so it will play nice with other effects). Robert’s full … Read more
Keeley PSI
Info about the original: We set out to take a classic design with lots of history and make it obviously something new. We took the op-amp version of old PI and inverted one of the stages, brought out the midrange, tightened the bass, and most importantly, added a Germanium transistor output! Yes, this is a opamp-transistor … Read more
Keeley Oxblood
Info about the original: The Keeley Oxblood Overdrive is our response to everyone kloning pedals. We wanted to build a new circuit that let players blend from perfectly clean to amp-crushing roar. We wanted that impossibly huge and focused midrange that makes any guitar… Strat, Paul, Tele, sound incredible. We knew we could do it our … Read more