Boss
Boss FZ-2 Hyper Fuzz
Now updated with corrected values since schematic online had quite a few resistor values wrong. Verified by Marcello M. And a short demo by MTK
Boss DS-1 Distortion Pre 1994
Pre 1994 spec using a DIP 8 single op amp and input and output buffers.
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.
Baja Highway 1
Bajaman’s overdrive/distortion circuit based on a modified Boss DS-1 with an active high and low tone control section. Original thread and schematic available on the FSB forum here. The layout should fit in a 1590B box.
Boss OD-1 Overdrive
Here’s the Boss OD-1–the first of the tube screamer-type overdrives (yes, the first TS wasn’t an Ibanez). It features asymmetrical clipping diodes (where a stock TS has symmetrical clipping) which gives it a thicker, more edgy sound. Initial versions of the circuit used a quad opamp, using 2 of the opamps as in the input/output … Read more