Diagram of the front panel of the Strymon BigSky
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Strymon BigSky MIDI CCs & NRPNs

MIDI implementation details for the Strymon BigSky.

Last update: November 27, 2025 • 61 parameters

Contributions welcome! You can email us your edited CSV if you don't want to use GitHub.

Knobs

Parameter CC Range Usage Description Orientation
Type (reverb machine) 19 [0–11]
0-11: Select machine
Selects reverb machine (12 types)
0-based
Decay 17 [0–127]
0~127: Decay time
Reverb decay / RT60
0-based
Pre-Delay 18 [0–127]
0~127: Pre-delay
Time before reverb onset
0-based
Mix 15 [0–127]
0~127: Wet level
Analog dry/wet balance
0-based
Tone 3 [0–127]
0~127: Tone
Global high-end content
0-based
Mod 14 [0–127]
0~127: Mod amount
Reverb modulation amount
0-based
Param 1 9 [0–127]
0~127: Param 1
Assignable per machine
0-based
Param 2 16 [0–127]
0~127: Param 2
Assignable per machine
0-based

Common Parameters

Parameter CC Range Usage Description Orientation
Boost 23 [0–60]
0~60: -3 dB to +3 dB
+/-3 dB output trim per preset
Note: Midpoint, approx. unity (0 dB).
Centered
Persist (Trails) 22 [0–1]
0: Off; 1: On
Reverb trails spillover when bypassed
0-based
Hold Mode 70 [0–1]
0: Freeze; 1: Infinite
Selects Freeze or Infinite for press-and-hold
0-based
Expression Enable 60 [0–1]
0: Off; 1: On
Enable/disable expression per preset
0-based
MIDI Clock 71 [0–1]
0: Off; 1: On
Follow external MIDI clock
Note: Controls Pre-Delay on most machines; Decay on Magneto/Nonlinear.
0-based

Room

Parameter CC Range Usage Description Orientation
Low End 61 [0–20]
0~20: Low End
Low-frequency content / decay profile
0-based
Size 59 [0–1]
0: Studio; 1: Club
Studio vs Club room size
0-based
Diffusion 58 [0–20]
0~20: Diffusion
Early/overall diffusion amount
0-based

Hall

Parameter CC Range Usage Description Orientation
Low End 39 [0–20]
0~20: Low End
Low-frequency content / decay profile
0-based
Size 40 [0–1]
0: Concert; 1: Arena
Concert vs Arena
0-based
Mid 42 [0–20]
0~20: Mid
Midrange emphasis/attenuation
0-based

Plate

Parameter CC Range Usage Description Orientation
Low End 69 [0–20]
0~20: Low End
Low-frequency content
0-based
Size 68 [0–1]
0: Small; 1: Large
Small vs Large plate
0-based

Spring

Parameter CC Range Usage Description Orientation
Low End 64 [0–20]
0~20: Low End
Low-frequency content
0-based
Dwell 63 [0–3]
0: Clean; 1: Combo; 2: Tube; 3: Overdrive
Preamp drive style
0-based
# of Springs 62 [0–2]
0: 1; 1: 2; 2: 3
Select 1, 2, or 3 springs
0-based

Swell

Parameter CC Range Usage Description Orientation
Low End 65 [0–20]
0~20: Low End
Low-frequency content
0-based
Rise Time 66 [0–22]
0~22: Rise time
Rise time of swelled signal
0-based
Mode 67 [0–1]
0: Swell Wet; 1: Swell Dry
Wet-in or Dry-in swell
0-based

Bloom

Parameter CC Range Usage Description Orientation
Low End 31 [0–20]
0~20: Low End
Low-frequency content
0-based
Length 32 [0–17]
0~17: Length
Length of bloom portion
0-based
Feedback 30 [0–17]
0~17: Feedback
Feedback around bloom generator
0-based

Cloud

Parameter CC Range Usage Description Orientation
Low End 38 [0–20]
0~20: Low End
Low-frequency content
0-based
Diffusion 37 [0–20]
0~20: Diffusion
Input and tank diffusion
0-based

Chorale

Parameter CC Range Usage Description Orientation
Vowel 33 [0–6]
0: AAHHOO; 1: AAHH; 2: AAHHOH; 3: OH; 4: OOOHOH; 5: OOOO; 6: Random
Choir vowel selection
0-based
Resonance 34 [0–2]
0: Mild; 1: Medium; 2: High
Vowel resonance intensity
0-based

Shimmer

Parameter CC Range Usage Description Orientation
Shift 1 25 [0–27]
0-27: Select interval
Voice 1 interval (-Oct to +2 Oct)
0-based
Shift 2 26 [0–28]
0-28: Select interval
Voice 2 interval (-Oct to +2 Oct)
0-based
Amount 27 [0–18]
0~18: Amount
Level of shifted voices
0-based
Mode 28 [0–2]
0: Input; 1: Regen; 2: In+Reg
Input/tank shimmer routing
0-based
Low End 24 [0–20]
0~20: Low End
Low-frequency content
0-based

Magneto

Parameter CC Range Usage Description Orientation
Low End 55 [0–20]
0~20: Low End
Low-frequency response
0-based
Diffusion 56 [0–20]
0~20: Diffusion
Head diffusor smear
0-based
Number of Heads 57 [0–2]
0: 3; 1: 4; 2: 6
Select 3/4/6 heads
0-based
Spacing 54 [0–1]
0: Even; 1: Uneven
Even or Uneven head spacing
0-based

Nonlinear

Parameter CC Range Usage Description Orientation
Low End 44 [0–20]
0~20: Low End
Low-frequency content
0-based
Shape 46 [0–5]
0: Swoosh; 1: Reverse; 2: Ramp; 3: Gate; 4: Gauss; 5: Bounce
Nonlinear shape
0-based
Diffusion 45 [0–20]
0~20: Diffusion
Nonlinear generator diffusion
0-based
Late Decay 47 [0–17]
0~17: Late Decay
Late reverb decay time
0-based
Late Level 48 [0–18]
0~18: Late Level
Late reverb level
0-based
Mod Speed 43 [0–17]
0~17: Mod speed
LFO speed for NL and late reverb
0-based

Reflections

Parameter CC Range Usage Description Orientation
Low End 52 [0–20]
0~20: Low End
Low-frequency decay profile
0-based
Location Y 50 [0–6]
0~6: Front to Back
Front...Back source position
0-based
Location X 49 [0–6]
0~6: Left to Right
Left...Right source position
0-based
Shape 51 [0–2]
0: Square; 1: Rect; 2: Oblong
Room shape
0-based

Global / Control

Parameter CC Range Usage Description Orientation
Footswitch A 80 [0–127]
0: Down; 127: Up
Front-panel A footswitch (down/up)
0-based
Footswitch B 82 [0–127]
0: Down; 127: Up
Front-panel B footswitch (down/up)
0-based
Footswitch C 81 [0–127]
0: Down; 127: Up
Front-panel C footswitch (down/up)
0-based
Press/Hold Switch 97 [0–127]
0: Off; 127: On
Footswitch press-and-hold
0-based
Remote Tap 93 [0–127]
0-127: Tap
Tap tempo via MIDI
0-based
Expression Pedal 100 [0–127]
0~127: Expression position
Expression value (heel to toe)
0-based
Bypass 102 [0–127]
0: Bypass; 127: Engage
Effect bypass/engage
0-based
MIDI Patch Bank Select (MSB) 0 [0–2]
0: 00A-42B; 1: 42C-85A; 2: 85B-99C
Select MIDI patch bank group.
0-based

This dataset is provided under the Creative Commons Attribution Share Alike 4.0 International license.