Strymon BigSky MX — MIDI Editor & CC Reference

Control the Strymon BigSky MX from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.

Explore the BigSky MX controls in your browser and connect compatible MIDI hardware to send settings to your pedal. The reference below shows the controls mapped in Nitelite; available functions depend on the pedal and firmware. The default MIDI channel in Nitelite is 1. Browser MIDI control works in Chrome, Edge, Opera, or Brave — no install required.

Knobs

Control	MIDI CC	Description
DECAY	CC 3	Reverb decay time. For Nonlinear/Magneto this controls delay Time.
PRE-DELAY	CC 5	Pre-delay time (0-1.5s). For Nonlinear/Magneto this controls Feedback.
TONE	CC 11	High-frequency damping. Lower=darker, higher=brighter.
MOD	CC 13	Modulation depth within the reverb
PARAM 1	CC 19	Assignable to any machine parameter
PARAM 2	CC 21	Assignable to any machine parameter
MIX	CC 15	Wet/dry mix. 50/50 at 3 o'clock position.

Switches

Switch	MIDI CC	Positions
TYPE	CC 1	Room / Hall / Chamber / Plate / Spring / Bloom / Cloud / Chorale / Shimmer / Magneto / Nonlinear / Impulse

Per-Mode Parameters

Room

Control	MIDI CC	Description
SIZE	CC 25	Room size (0=Studio, 1=Club)
DIFFUSION	CC 27	Softens early reflections for thicker reverb
VOICE	CC 29	Room voicing (0=MX, 1=Classic)

Hall

Control	MIDI CC	Description
MID	CC 35	Midrange frequency content. 10=flat.
SIZE	CC 37	Hall size (0=Concert, 1=Arena)
SWELL RISE	CC 39	Swell rise time. 0=no swell effect.
SWELL TYPE	CC 41	Swell type (0=Wet, 1=Dry)
VOICE	CC 43	Hall voicing (0=MX, 1=Classic)

Chamber

Control	MIDI CC	Description
COLOR	CC 45	Tonality character (0=Neutral, 1=Clear, 2=Smooth, 3=Crisp, 4=Deep)

Plate

Control	MIDI CC	Description
SIZE	CC 47	Plate size (0=Small project, 1=Large studio)
VOICE	CC 49	Plate voicing (0=MX, 1=Classic)

Spring

Control	MIDI CC	Description
DWELL	CC 51	Preamp drive (0=Clean, 1=Combo, 2=Tube, 3=Overdrive)
NUMBER	CC 53	Number of springs (0=1, 1=2, 2=3)
VOICE	CC 55	Spring voicing (0=MX, 1=Classic)

Bloom

Control	MIDI CC	Description
LENGTH	CC 87	Length of the bloom portion
FEEDBACK	CC 89	Feedback around the bloom portion
HARMONICS	CC 91	Harmonic enhancement like an analog synth pad

Cloud

Control	MIDI CC	Description
ENSEMBLE	CC 69	String section-like harmonic pad enhancement
DIFFUSION	CC 67	Input diffusion amount. Min=grainy, max=smooth.

Chorale

Control	MIDI CC	Description
VOWEL	CC 93	Vowel formant (0=AAHHOO, 1=AAHH, 2=AAHHOH, 3=OH, 4=OOOHOH, 5=OOO, 6=Random)
RESONANCE	CC 95	Vocal resonance intensity (0=Mild, 1=Medium, 2=High)
CHOIR	CC 103	Vocal choir pad amount. 0=no choir.
CHOIR VOICE	CC 105	Choir pitch range (0=Tenor, 1=Baritone)

Shimmer

Control	MIDI CC	Description
SHIFT 1	CC 71	First pitch shift voice interval
SHIFT 2	CC 72	Second pitch shift voice interval (0=Off)
AMOUNT	CC 75	Level of shifted voices. 0=Off.
FEEDBACK	CC 77	Regeneration mode (0=Input, 1=Regen, 2=Input+Regen)
VOICE	CC 85	Shimmer voicing (0=MX, 1=Classic)

Magneto

Control	MIDI CC	Description
DIFFUSION	CC 107	Diffusors on the magnetic heads. Higher=more smeared/reverbed.
HEADS	CC 109	Number of tape heads (0=1, 1=2, 2=3, 3=4, 4=6)
SPACING	CC 111	Head spacing (0=Even, 1=Uneven)
PING PONG	CC 113	Stereo ping pong effect (0=Off, 1=On)

Nonlinear

Control	MIDI CC	Description
SHAPE	CC 115	Envelope shape (0=Swoosh, 1=Reverse, 2=Ramp, 3=Gate, 4=Gauss, 5=Bounce)
CHOP	CC 117	Amplitude modulation tremolo effect on reverb decay
DIFFUSION	CC 119	Diffusors on the nonlinear generator
DECAY	CC 121	Late reverb decay time
LEVEL	CC 123	Late reverb level. 0=off.
MOD SPEED	CC 125	Modulation LFO speed for taps and late reverb

Impulse

Control	MIDI CC	Description
ATTACK	CC 57	Timing of the onset of the reverberation
STRETCH	CC 59	Re-samples the IR to change decay time and frequency content
TAIL	CC 61	Decay tail shape (0=Envelope, 1=Gate)
DIRECTION	CC 63	Reverb direction (0=Forward, 1=Reverse)
FEEDBACK	CC 65	Wet signal fed back for added reflections and ring

Footswitches

A — CC 80
B — CC 81
INFINITE — CC 82

Special MIDI Functions

Expression — CC 100
Bypass — CC 102. When on, Reverb 1 is bypassed. When off, the effect is engaged. Per Strymon spec: 0=Bypassed, 1-127=Engaged.
Persist — CC 84. When on, the reverb tail continues after bypass. 0=Off, 1-127=On.
Infinite On/Off — CC 97. Toggle Infinite mode on or off. 0=Off, 1-127=On.
Infinite Latch — CC 98. Infinite footswitch behavior. 0=Momentary, 1-127=Latching.
Boost — CC 79. Output boost level. 0=-3dB, 30=0dB, 60=+3dB.
Infinite Mode — CC 17. Infinite footswitch mode. 0=Freeze, 1=Infinite, 2=Off.
Dual Mode — CC 99. Dual reverb routing. 0=Off, 1=Parallel, 2=Series 1>>2, 3=Series 1<<2, 4=Split L|R, 5=Split R|L.
Output Level — CC 7. Overall output level (0-16).
Pan — CC 9. Stereo pan position. 0=Full Left, 8=Center, 16=Full Right.
Low End — CC 23. Low-frequency content adjustment (0-20).
MIDI Patch Bank — CC 0. Select preset bank before sending a Program Change. 0=Bank 0 (presets 00A-63B), 1=Bank 1 (064A-127B), 2=Bank 2 (128A-149B).
Value Encoder — CC 83. Simulate Value Encoder scroll. Send 0 to scroll counter-clockwise, 1 to scroll clockwise.

Hardware Presets

BigSky MX has 300 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.