Mono/Stereo Setup

Your Keystone Musical Instruments pedal can run stereo-in/stereo-out, mono-in/stereo-out, or fully mono. You can set the mode right on the pedal in about 30 seconds — no computer needed. (You can also set it, along with much more, from Keystone Control Center.)

Watch the walkthrough

Cables: use TS (tip/sleeve) cables for mono-only connections. Use TRS (tip/ring/sleeve) cables for stereo connections — TRS also works fine for mono.

Setting the mode

Enter setup mode. Hold down FS2 (the left footswitch) while you plug in 9V power, and keep holding it for about 5 seconds.

Holding the left footswitch while powering up the pedal — Hold FS2 while powering up

Choose your mode with Toggle 3 — the bottom toggle, closest to the footswitches. The LEDs show which mode is selected.

Toggle 3	Mode	LEDs
UP	Stereo in / Stereo out (default)	Blue / Blue
MIDDLE	Mono in / Stereo out	Red / Blue
DOWN	Mono in / Mono out	Red / Red

Both LEDs blue: stereo in, stereo out — Stereo / Stereo

Red and blue LEDs: mono in, stereo out — Mono / Stereo

Both LEDs red: mono in, mono out — Mono / Mono

Save and exit. Press FS2 again. LED 2 will blink green to confirm the mode you chose:

Mode	Green blinks
Stereo / Stereo	3
Mono / Stereo	2
Mono / Mono	1

Green LED blinking to confirm the selected mode — Green confirmation blinks

That's it — now play

Your setting is saved. The same green blink code appears every time the pedal powers up, so you can always tell at a glance which mode it's in.

Pedal shown: Kuttor Slice Shaper.

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