Meris LVX — MIDI Editor & CC Reference

Control the Meris LVX from your browser — full MIDI CC reference for 21 parameters, interactive editor, and AI-generated presets. Free, no install.

Nitelite gives the LVX a full browser-based control surface: turn every knob, flip every switch, describe the tone you want to the AI Tone Terminal, and save the results — all sent to the pedal live over MIDI (default channel 1). Works free in Chrome, Edge, Opera, or Brave — no install required.

Knobs

Control	MIDI CC	Description
TIME	CC 15	Current delay time — twin 2.54s delay lines with 32-bit resolution, expressed in ms or BPM. Linked to front panel Time knob.
FEEDBACK	CC 19	Delay line output mixed onto the delay line input. Linked to front panel Feedback knob. Sets feedback for both L and R delays.
MOD	CC 21	Amount of modulation applied to the L and R delay lines. Different voicing per Delay Type. Linked to front panel Mod knob.
MIX	CC 1	Balance between dry and wet signal — directly connected to front panel Mix knob.
CROSSFEED	CC 20	How much Left delay output is mixed onto the Right delay input, and vice versa. Creates cascading delay effects when L/R have different settings.
DAMPING	CC 120	Reduces high frequencies in the L and R delays. Response differs per Delay Type: darkens repeats for Digital, alters BBD clock filtering, ages/softens for Magnetic tape.
L NOTE DIV	CC 17	Time subdivision for the Left delay line, expressed as a note value ratio of Time. Off = quarter notes matching the blinking Tap LED.
R NOTE DIV	CC 18	Time subdivision for the Right delay line, expressed as a note value ratio of Time. Off = quarter notes matching the blinking Tap LED.

Switches

Switch	MIDI CC	Positions
DELAY STRUCTURE	CC 13	Standard / MultiTap / MultiFilter / Poly / Reverse / Series
DELAY TYPE	CC 16	Digital / BBD / Magnetic
HALF SPEED	CC 119	Off / On
Preamp	CC 5	Off / Volume Pedal / Tube / Transistor / Op-Amp / Drive / Bit Crusher
Preamp	CC 6	Pre + Dry / Pre / Feedback / Post
Dynamics	CC 62	Off / Compressor / Swell / Diffusion / Limiter
Dynamics	CC 63	Pre + Dry / Pre / Feedback / Post
Pitch	CC 70	Off / Poly Chroma / Harmony / Micro Tune / Mono Chroma / Lo-Fi
Pitch	CC 71	Pre + Dry / Pre / Feedback / Post
Filter	CC 78	Off / Ladder / State Variable / Comb / Parametric
Filter	CC 79	Pre + Dry / Pre / Feedback / Post
Mod	CC 86	Off / Chorus / Flanger / Dynamic Flanger / Cassette / Barberpole / Granulize / Ring Mod
Mod	CC 87	Pre + Dry / Pre / Feedback / Post

Per-Mode Parameters

MultiTap

Control	MIDI CC	Description
TAP 1	CC 22	Time/position of Tap 1 (Left channel), 0-100%
TAP 2	CC 23	Time/position of Tap 2 (Left channel), 0-100%
TAP 3	CC 24	Time/position of Tap 3 (Left channel), 0-100%
TAP 4	CC 25	Time/position of Tap 4 (Left channel), 0-100%
TAP 5	CC 26	Time/position of Tap 5 (Right channel), 0-100%
TAP 6	CC 27	Time/position of Tap 6 (Right channel), 0-100%
TAP 7	CC 28	Time/position of Tap 7 (Right channel), 0-100%
TAP 8	CC 29	Time/position of Tap 8 (Right channel), 0-100%
LEVEL 1	CC 38	Output level of Tap 1, 0-100%
LEVEL 2	CC 39	Output level of Tap 2, 0-100%
LEVEL 3	CC 40	Output level of Tap 3, 0-100%
LEVEL 4	CC 41	Output level of Tap 4, 0-100%
LEVEL 5	CC 42	Output level of Tap 5, 0-100%
LEVEL 6	CC 43	Output level of Tap 6, 0-100%
LEVEL 7	CC 44	Output level of Tap 7, 0-100%
LEVEL 8	CC 45	Output level of Tap 8, 0-100%
PAN 1	CC 46	Stereo pan of Tap 1, 0-100%
PAN 2	CC 47	Stereo pan of Tap 2, 0-100%
PAN 3	CC 48	Stereo pan of Tap 3, 0-100%
PAN 4	CC 49	Stereo pan of Tap 4, 0-100%
PAN 5	CC 50	Stereo pan of Tap 5, 0-100%
PAN 6	CC 51	Stereo pan of Tap 6, 0-100%
PAN 7	CC 52	Stereo pan of Tap 7, 0-100%
PAN 8	CC 53	Stereo pan of Tap 8, 0-100%

MultiFilter

Control	MIDI CC	Description
TAP 1	CC 22	Time/position of Tap 1 (Left channel), 0-100%
TAP 2	CC 23	Time/position of Tap 2 (Left channel), 0-100%
TAP 3	CC 24	Time/position of Tap 3 (Left channel), 0-100%
TAP 4	CC 25	Time/position of Tap 4 (Left channel), 0-100%
TAP 5	CC 26	Time/position of Tap 5 (Right channel), 0-100%
TAP 6	CC 27	Time/position of Tap 6 (Right channel), 0-100%
TAP 7	CC 28	Time/position of Tap 7 (Right channel), 0-100%
TAP 8	CC 29	Time/position of Tap 8 (Right channel), 0-100%
FILTER 1	CC 30	Bandpass center frequency for Tap 1, 20Hz-10kHz
FILTER 2	CC 31	Bandpass center frequency for Tap 2, 20Hz-10kHz
FILTER 3	CC 32	Bandpass center frequency for Tap 3, 20Hz-10kHz
FILTER 4	CC 33	Bandpass center frequency for Tap 4, 20Hz-10kHz
FILTER 5	CC 34	Bandpass center frequency for Tap 5, 20Hz-10kHz
FILTER 6	CC 35	Bandpass center frequency for Tap 6, 20Hz-10kHz
FILTER 7	CC 36	Bandpass center frequency for Tap 7, 20Hz-10kHz
FILTER 8	CC 37	Bandpass center frequency for Tap 8, 20Hz-10kHz
LEVEL 1	CC 38	Output level of Tap 1, 0-100%
LEVEL 2	CC 39	Output level of Tap 2, 0-100%
LEVEL 3	CC 40	Output level of Tap 3, 0-100%
LEVEL 4	CC 41	Output level of Tap 4, 0-100%
LEVEL 5	CC 42	Output level of Tap 5, 0-100%
LEVEL 6	CC 43	Output level of Tap 6, 0-100%
LEVEL 7	CC 44	Output level of Tap 7, 0-100%
LEVEL 8	CC 45	Output level of Tap 8, 0-100%
PAN 1	CC 46	Stereo pan of Tap 1, 0-100%
PAN 2	CC 47	Stereo pan of Tap 2, 0-100%
PAN 3	CC 48	Stereo pan of Tap 3, 0-100%
PAN 4	CC 49	Stereo pan of Tap 4, 0-100%
PAN 5	CC 50	Stereo pan of Tap 5, 0-100%
PAN 6	CC 51	Stereo pan of Tap 6, 0-100%
PAN 7	CC 52	Stereo pan of Tap 7, 0-100%
PAN 8	CC 53	Stereo pan of Tap 8, 0-100%
Q 1	CC 54	Bandpass Q / resonance for Tap 1 (0.5 to 10)
Q 2	CC 55	Bandpass Q / resonance for Tap 2 (0.5 to 10)
Q 3	CC 56	Bandpass Q / resonance for Tap 3 (0.5 to 10)
Q 4	CC 57	Bandpass Q / resonance for Tap 4 (0.5 to 10)
Q 5	CC 58	Bandpass Q / resonance for Tap 5 (0.5 to 10)
Q 6	CC 59	Bandpass Q / resonance for Tap 6 (0.5 to 10)
Q 7	CC 60	Bandpass Q / resonance for Tap 7 (0.5 to 10)
Q 8	CC 61	Bandpass Q / resonance for Tap 8 (0.5 to 10)

Poly

Control	MIDI CC	Description
MULTIPLY	CC 22	Number of taps: 0-21 = 1 tap, 22-42 = 2 taps, 43-63 = 3 taps, 64-85 = 4 taps, 86-106 = 5 taps, 107-127 = 6 taps.
DIMENSION	CC 23	Dimension control for the dual Polymoon-style delay structure — shapes the spatial spread, 0-100%.
LEVEL	CC 24	Output level: 0 = AUTO (self-adjusting level based on feedback/repeats); 1-127 = 0-100% manual level.
L MODULATION	CC 25	Left-channel modulation preset (16 options): 0-7=Off, 8-15=Slow & Shallow, 16-23=Med & Shallow, 24-31=Med & Wide, 32-39=Fast & Shallow, 40-47=Fast & Wide, 48-55=24 Hz FM, 56-63=48 Hz FM, 64-71=96 Hz FM, 72-79=m2 Down & M2 Up, 80-87=Oct Down & m3 Up, 88-95=5th Down & 4th Up, 96-103=Tremolo 4th Up, 104-111=Oct Down & 5th Up, 112-119=5th Down & Oct Up, 120-127=Octave Down & Up.
R MODULATION	CC 26	Right-channel modulation preset (same 16 options as L Modulation).

Series

Control	MIDI CC	Description
FEEDBACK 2	CC 22	Feedback of Delay 2 (the second delay in the series). Delay 1 uses the common Feedback CC.
MID MIX	CC 23	Sets the output mix of Delay 1 as it goes into Delay 2, 0-100%.
L DIV 2	CC 24	Note division for Left Delay 2. Delay 1 uses the common Left Note Div CC.
R DIV 2	CC 25	Note division for Right Delay 2. Delay 1 uses the common Right Note Div CC.

Processing Block Parameters

Volume Pedal

Control	MIDI CC	Description
LEVEL	CC 7	Volume level, 0-100%
BALANCE	CC 8	Panning control, -100% to 100% (0 = fully right, 127 = fully left)

Tube

Control	MIDI CC	Description
GAIN	CC 7	Tube preamp gain — volume before the preamp stage, 0-100%
LEVEL	CC 11	Output level of the Tube preamp, 0-100%

Transistor

Control	MIDI CC	Description
GAIN	CC 7	Transistor preamp gain with high-frequency emphasis, 0-100%
LEVEL	CC 11	Output level of the Transistor preamp, 0-100%

Op-Amp

Control	MIDI CC	Description
GAIN	CC 7	Op-Amp preamp gain — broadband boost with de-emphasized low end, 0-100%
LEVEL	CC 11	Output level of the Op-Amp preamp, 0-100%

Drive

Control	MIDI CC	Description
GAIN	CC 7	Drive gain — amount of overdrive crunch, 0-100%
BASS	CC 8	Low-end EQ in the Drive effect, 0-100%
MID	CC 9	Midrange EQ in the Drive effect, 0-100%
TREBLE	CC 10	High-end EQ in the Drive effect, 0-100%
LEVEL	CC 11	Output level of the Drive effect, 0-100%

Bit Crusher

Control	MIDI CC	Description
DECIMATION	CC 7	Sample rate decimation from 20 Hz to 48 kHz. Lower values introduce aliasing and vintage lo-fi character.
BIT DEPTH	CC 8	Bit depth from 1 to 32 bits, crushing the input signal and decreasing dynamic range.
LEVEL	CC 9	Output level of the Bit Crusher, 0-100%

Processing Block Parameters

Compressor

Control	MIDI CC	Description
THRESHOLD	CC 64	Amount of volume needed to trigger the Compressor (-65 to 0 dB).
RATIO	CC 65	Compression ratio, 1:1 to 40:1. Higher = more aggressive; lower = more subtle.
GAIN	CC 66	Compressor makeup gain, 0 to 20 dB.
ATTACK	CC 67	3-step attack setting: 0-42 = Fast, 43-85 = Medium, 86-127 = Slow. Fast = controlled; slow = punchier.
RELEASE	CC 68	3-step release setting: 0-42 = Fast, 43-85 = Medium, 86-127 = Slow.
MIX	CC 69	Wet/dry mix for parallel compression, 0-100%.

Swell

Control	MIDI CC	Description
ATTACK TIME	CC 64	Length of time for a swell to reach full volume, 10 ms to 1000 ms, after a pick attack is detected.
GAIN	CC 65	Gain before the Swell effect, 0 to 6 dB.

Diffusion

Control	MIDI CC	Description
DENSITY	CC 64	Density of short multitap delays, 0-100%. Adds reflections simulating a small reflective space — softens and smears the audio.
LPF	CC 65	Low pass filter cutoff, 0 Hz to 24 kHz. Cuts highs to further soften sound.

Limiter

Control	MIDI CC	Description
THRESHOLD	CC 64	Hard-limit threshold, -65 to 0 dB. Signal is strictly limited at this level.
GAIN	CC 66	Limiter makeup gain, 0 to 20 dB.
RELEASE	CC 68	3-step release: 0-42 = Fast, 43-85 = Medium, 86-127 = Slow.

Processing Block Parameters

Poly Chroma

Control	MIDI CC	Description
PITCH	CC 72	Polyphonic chromatic pitch, -12 m2 to +12 m2 (m2 = minor second / half step). 64 = unison.
MIX	CC 74	Wet/dry mix of the Poly Chroma pitch shifter, 0-100%.

Harmony

Control	MIDI CC	Description
PITCH L	CC 72	Diatonic interval for Left voice: -2 Oct / -Oct / -7th through Unison / 2nd / 3rd / 4th / 5th / 6th / 7th / Oct / +2 Oct.
PITCH R	CC 73	Diatonic interval for Right voice (same enum as Pitch L).
MIX	CC 74	Wet/dry mix of the Harmony shifter, 0-100%.
KEY	CC 75	Root key the harmonized pitches snap to: C, Db, D, Eb, E, F, Gb, G, Ab, A, Bb, B.
SCALE	CC 76	Harmony scale: 0-18 = Major, 19-36 = Minor, 37-54 = Harmonic Minor, 55-73 = Melodic Minor, 74-91 = Double Harmonic, 92-109 = Lydian Penta, 110-127 = Pentatonic.
GLIDE	CC 77	Glide toggle: 0-63 = Off (arpeggiated stepping), 64-127 = On (smooth whammy-like sweep between pitches).

Micro Tune

Control	MIDI CC	Description
PITCH L	CC 72	Left-channel micro-pitch, -50 to +50 cents, for chorus-like detune without LFO.
PITCH R	CC 73	Right-channel micro-pitch, -50 to +50 cents, for chorus-like detune without LFO.
MIX	CC 74	Wet/dry mix of the Micro Tune effect, 0-100%.

Mono Chroma

Control	MIDI CC	Description
PITCH L	CC 72	Left-channel monophonic pitch shift in fine m2 steps from -24 m2 to +24 m2.
PITCH R	CC 73	Right-channel monophonic pitch shift in fine m2 steps from -24 m2 to +24 m2.
MIX	CC 74	Wet/dry mix of the Mono Chroma shifter, 0-100%.
GLIDE	CC 77	Glide toggle: 0-63 = Off, 64-127 = On (smooths transitions between pitches).

Lo-Fi

Control	MIDI CC	Description
PITCH L	CC 72	Left-channel lo-fi pitch shift, -12 m2 to +12 m2. Modulated, low fidelity character.
PITCH R	CC 73	Right-channel lo-fi pitch shift, -12 m2 to +12 m2. Modulated, low fidelity character.
MIX	CC 74	Wet/dry mix of the Lo-Fi pitch shifter, 0-100%.

Processing Block Parameters

Ladder

Control	MIDI CC	Description
FREQUENCY	CC 80	Filter cutoff frequency
RESONANCE	CC 81	Range of frequencies around cutoff that are emphasized. Higher = narrower pass range.
TOPOLOGY	CC 82	Filter topology — Lowpass, Bandpass, or Highpass
SPREAD	CC 83	Offsets the center frequency on the Right side from the Left

State Variable

Control	MIDI CC	Description
FREQUENCY	CC 80	Filter cutoff frequency
RESONANCE	CC 81	Filter resonance — emphasizes frequencies around cutoff
TOPOLOGY	CC 82	Filter topology — Lowpass, Bandpass, or Highpass
SPREAD	CC 83	Offsets the Right filter frequency from the Left

Comb

Control	MIDI CC	Description
DEPTH	CC 80	Comb filter short-delay depth in milliseconds — creates a series of resonant notches
RESONANCE	CC 81	Comb filter resonance — sharpness of the notches
LEVEL	CC 82	Output level of the Comb filter
SPREAD	CC 83	Offsets the Right channel filter from the Left for stereo effects

Parametric

Control	MIDI CC	Description
FREQUENCY	CC 80	Center frequency of the parametric band
RESONANCE	CC 81	Q / bandwidth of the parametric band
TOPOLOGY	CC 82	Shelving topology
GAIN	CC 83	Boost/cut in the band, -10dB to +10dB

Processing Block Parameters

Chorus

Control	MIDI CC	Description
SPEED	CC 88	Rate of the Chorus modulation, 0-10 Hz. 0.5 Hz is a great starting point.
DEPTH	CC 89	Intensity of the Chorus modulation, 0-100%. Low = subtle movement; high = strong detuning.
MIX	CC 92	Chorus wet/dry mix, 0-100% (100% = Vibrato).

Flanger

Control	MIDI CC	Description
SPEED	CC 88	Rate of the Flanger modulation, 0-10 Hz.
DEPTH	CC 89	Intensity of the Flanger modulation, 0-100%.
FEEDBACK	CC 91	Bipolar feedback, -100% to +100%. 64 = 0. Creates strong resonant peaks; extremes self-oscillate.
MIX	CC 92	Flanger wet/dry mix, 0-100%.

Dynamic Flanger

Control	MIDI CC	Description
ATTACK SPEED	CC 88	Envelope attack speed responding to input signal, 0-100%.
DEPTH	CC 89	Intensity of the envelope-driven flanging, 0-100%.
FEEDBACK	CC 91	Bipolar feedback, -100% to +100%. 64 = 0.
MIX	CC 92	Dynamic Flanger wet/dry mix, 0-100%.
DIRECTION	CC 93	Direction: 0-42 = Up (L→high on louder input), 43-85 = Down (high→low), 86-127 = Both (L up, R down).

Cassette

Control	MIDI CC	Description
SLIP	CC 88	Slow randomized fluctuations simulating a failing motor or slipping gear, 0-100%.
CRINKLE	CC 89	Fluctuations simulating creases and folds in damaged magnetic tape, 0-100%.
STATIC	CC 90	High-frequency noise simulating electrical interference in a failing cassette player, 0-100%.
HIGHS	CC 91	Shelf EQ cut for high-end frequencies (unity gain at 100%).
MIX	CC 92	Cassette effect wet/dry mix, 0-100%.
LOWS	CC 93	Shelf EQ cut for low-end frequencies (unity gain at 100%).

Barberpole

Control	MIDI CC	Description
SPEED	CC 88	Rate of the endlessly spiraling notches, 0-10 Hz.
FEEDBACK	CC 89	Feedback amount for the Barberpole phasers, 0-100%.
DIRECTION	CC 91	Direction: 0-42 = Up (L & R sweep low→high), 43-85 = Down (high→low), 86-127 = Both (L low→high, R high→low for stereo spread).

Granulize

Control	MIDI CC	Description
SIZE	CC 88	Length of repeat grains, 1 ms to 600 ms.
REPEATS	CC 89	Number of times a grain plays before a new grain is captured, 0-50 repeats.
SPREAD	CC 90	Offset between L and R channel grain size, 0-100%. At zero, both channels are identical.
DIRECTION	CC 91	Direction: 0-63 = Fwd (grains play straight), 64-127 = Rev (grains play reversed).

Ring Mod

Control	MIDI CC	Description
FREQUENCY	CC 88	Ring modulator carrier frequency. Low values with Mix 50% create tremolo-like effects.
WAVESHAPE	CC 89	Sine (smooth) vs Square (abrupt, more noticeable).
MIX	CC 92	Ring Mod wet/dry mix, 0-100%.

Footswitches

BYPASS — bypass on CC 14
TUNER — bypass on CC 117
HOLD MODIFIER — bypass on CC 118

Special MIDI Functions

Tap Tempo — CC 99
Expression — CC 4
Bypass — CC 14. When on, the effect is bypassed (dry signal only). When off, the effect is engaged. Per Meris spec: 0–63 = FX bypass, 64–127 = FX enabled.
Dry Trim — CC 2. Fine-tune dry signal level.
Wet Trim — CC 3. Fine-tune wet signal level.
MIDI Clock — CC 121. Controls how this preset responds to incoming MIDI Beat Clock. 0-42 = Use Global; 43-85 = Force Listen; 86-127 = Force Ignore.
Looper Location — CC 94. Where the 60-second stereo looper is placed in the signal chain. 0-25 = Pre + Dry; 26-51 = Pre (before delays); 52-76 = Feedback (into delay feedback); 77-102 = Post (after delays); 103-127 = Post Mix (after delay mix).
Looper Level — CC 95. Output level of the looper
Looper Feedback — CC 96. How much of the looper output is mixed back into the loop on overdub
Loop FX1 Select — CC 97. Selects the function of footswitch 3 for the looper: Play Once, Retrigger, or Expression Pedal Warp.
Loop FX2 Select — CC 98. Selects the function of footswitch 4 for the looper: Reverse, Half Speed, or Half Speed / Reverse.
Loop FX2 Press — CC 103. Loop FX2 footswitch. For Half Speed / Reverse: 0-63 = Reverse, 64-127 = Half Speed.
Looper Rec / Overdub — CC 100. Trigger looper Record / Overdub (press = 127).
Looper Play / Stop — CC 101. Trigger looper Play / Stop (press = 127).
Loop FX1 Press — CC 102. Trigger Loop FX1 footswitch press (press = 127).
Toggle Tuner — CC 117. Activates the chromatic tuner. Send 127 to engage Tuner mode.
Hold Modifier — CC 118. Triggers the Hold Modifier function. Send 127 to press, then 0 to release. Always send a release (0) after every press.

Hardware Presets

The LVX has 99 hardware preset slots. Nitelite can save your current settings to a slot and recall slots via MIDI program change.

Meris LVX — MIDI Editor & CC Reference

Knobs

Switches

Per-Mode Parameters

MultiTap

MultiFilter

Poly

Series

Processing Block Parameters

Volume Pedal

Tube

Transistor

Op-Amp

Drive

Bit Crusher

Processing Block Parameters

Compressor

Swell

Diffusion

Limiter

Processing Block Parameters

Poly Chroma

Harmony

Micro Tune

Mono Chroma

Lo-Fi

Processing Block Parameters

Ladder

State Variable

Comb

Parametric

Processing Block Parameters

Chorus

Flanger

Dynamic Flanger

Cassette

Barberpole

Granulize

Ring Mod

Footswitches

Special MIDI Functions

Hardware Presets

More Meris Pedals on Nitelite