Meris LVX — MIDI Editor & CC Reference
Control the Meris LVX from your browser — MIDI control reference, interactive editor, and AI-generated presets. Free, no install.
Explore the LVX 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 |
|---|---|---|
| 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 — CC 14
- TUNER — CC 117
- HOLD MODIFIER — 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
LVX has 99 hardware preset slots, recalled using MIDI Program Change. Saving requires an action on the pedal; follow the hardware preset manager instructions.