"PRODUCER's SWITCH" — DELUXE EDITION.
IN JACK hard-wired to the OUTJACK.
3PDT switches on/off a RGB LED with the 4 POTS controlling mix of
1) RED
2) GREEN
3) BLUE
4) INTENSITY (overall brightness)
NO labels. ALL-BLACK stock Boss-style knobs.
On the next recording session when the producer says "sound isn't quite right, can you make it more 'bergamot' ?", [or other stupid descriptor]
you turn on the LED, and then play your part again while tweaking one of the knobs until the producer is happy with the tone.