x3 knobs set for BOSS FX EFFECT PEDAL DELAY FX DISTORTION OVERDRIVE FUZZ

For BOSS SD-1 CS-1 CS-2 DM-2 DN-2 DS-1 CE-2 BD-2 CE2-B FRV-1 FZ-3 FZ-5 OC-2 NF-1 OD-1 OD-3 PH-1 TW-1 TR-2 and many more.