The Green channel- “Si” (Silicon clipping diodes), “Ge” (Germanium clipping diodes) and “N” (no clipping diodes). The “Si” mode will be bright/loud/fuzzy and has a natural tube type break up. “Ge” mode is a little looser with more lows and warmth and less output. “N” mode acts as a clean boost until you hit roughly 1 o’clock on the gain, at which point it’ll start to saturate the op amp into a biting, loud distortion. Phew! Still with me?

Cool, onto the modes of the Red channel. Here, you’ve got “LED” (LED clipping diodes), “FET” (Mosfet clipping diodes) and “N” (again, no clipping diodes). “LED” mode is the loudest, cleanest and most touch sensitive/least compressed. “Mos” mode is the most compressed with a tighter crunch; the biggest hesher of the group. And finally, the “N” mode is the same clean to crazy loud op amp distortion set-up as the Green channel.

With a couple of switch clicks you can go from your bypassed tone to warm break up to over-the-top gnarly grind and any/every combination in between. With more and more drive pedals moving onto already crowded pedal boards, having the Gray Channel dual overdrive is like, totally crucial for sonic growth and sustain.

This device is true bypass and uses relay based “soft touch” switching. Audio will not pass without power.

Controls

Channel Switch: Selects between Red and Green channels

Activate Switch: Turns the effect on and off

Green Controls

Gain: Adjusts the drive, dirtier clockwise, cleaner counterclockwise
Green: Sets the output level when the green LED is lit.
Toggle: “Si”- Silicon clipping, “N”- No clipping, “Ge”- Germanium Clipping

Red Controls

Gain: Adjusts the drive, dirtier clockwise, cleaner counterclockwise
Red: Sets the output level when the red LED is lit.
Toggle: “LED- LED clipping, “N”- No clipping, “FET”- Mosfet Clipping