mu

2026

warm compression and saturation into oblivion

mu is a variable-mu-like compression/saturation/limiter turned into an abomination. on low settings it creates clean, tempered, creamy, tube-like compression and squeeze. push the input gain and it quickly overloads into glitchy, sputtery saturation that makes weird with your sound, or compression that’ll send it into the pale. feed-forward and feed-back modes, three compression characters, warmth voicing, and wet/dry blend.

warning: this pedal can easily damage your hearing through headphones. be careful.

sweet spots

gentle compression: threshold -25, input gain 8, attack 100ms, release 500ms, mix 1.0
heavy limiting: threshold -15, input gain 20, attack 1ms, release 50ms, heavy character
tube warmth: input gain 15, mix 0.3, neutral warmth, compression bypass on
clean parallel compression: threshold -25, input gain 15, mix 0.5, medium character
broadcast leveling: threshold -20, input gain 8, attack 200ms, release 2000ms, dark warmth

controls

threshold

level at which compression begins (-40 to 0 dB)

input gain

drives signal into compressor — more gain means more saturation (0 to +20 dB)

attack

how fast gain reduction engages (5-200 ms)

release

how fast gain reduction releases (50-2000 ms)

mix

wet/dry blend (0=dry, 1=wet)

output

makeup gain (-20 to +20 dB)

toggle a

[on-on] feed-forward (up) / feed-back (down) — detector topology

toggle b

[on-off-on] dark (up) / neutral (middle) / bright (down) — warmth voicing

toggle c

[on-off-on] gentle (up) / medium (middle) / heavy (down) — compression character

footswitch l

[latching] bypass compression (line amp mode — tube saturation only)

footswitch r

[latching] effect on/off

both fs (hold 2s)

reset to bootloader (leds blink 3x)

led l

gain reduction meter

led r

effect engaged indicator