The Leviasynth Desktop is a 16-voice hybrid algorithmic FM synthesizer from Ashun Sound Machines. 8 oscillators per voice, each independently configurable for synthesis mode (Phase Mod, Freq Mod, PW Mod, HTE Sync, three types of Phase Distortion). Over 140 preset algorithms define oscillator routing; custom algorithms can be created and morphed between. Dual filter path: 18-type digital filter + 4-pole self-resonant analog filter. Full CV/Gate I/O for modular integration. 75mm VESA mount on rear panel. Acquired April 2026 (demo unit, Perfect Circuit). Mounted via Ergotron LX Premium arm on walnut board bridging Racks #4 and #5.
Main Features
Voices
16 (Single mode) / 2×8 (Multi mode)
Oscillators
8 per voice — any can modulate any other
Synthesis Modes
Phase Mod, Freq Mod, PW Mod, HTE Sync, 3× Phase Distortion
Waveforms
Over 300
Algorithms
140+ preset; custom; morphable
Digital Filter
18 types — multimode morphing, vowel formant
Analog Filter
4-pole lowpass, self-resonant, pre-drive overdrive
Envelopes
5 — loopable ADSR with Delay and Hold, definable loop points
LFOs
5
Mod Matrix
32 routes per patch
Macros
8 per patch (16 in Multi mode)
Effects
Delay (5 types), Reverb (4 types), Pre/Post FX
Pads
16 velocity-sensitive RGB with polyphonic pressure (Polytouch®)
Sequencer
2 poly note tracks + 1 Macro track, up to 128 steps
Arpeggiator
8 modes, 64 preset + 64 user phrases, Ratchet/Chance/Entropy
Multi Mode
Layer or split two 8-voice patches; 5 banks of 128 Multis
CV Outputs
Pitch, Gate, Mod 1, Mod 2, Clock (all 1/8" TS)
CV Inputs
Mod 1, Mod 2 (1/8" TS)
Patch Banks
8 banks × 128 patches (Single); 5 banks × 128 (Multi)
Overflow
Two units can link for 32-voice polyphony
VESA Mount
75mm × 75mm — rear panel
USB
Type B, class-compliant — no drivers
Physical Specifications
Dimensions
442 × 267 × 91.5 mm (17.4 × 10.51 × 3.6")
Weight
4.75 kg (10.47 lbs)
Power
12V DC, ≥2A, center positive
Headphone
6.35mm (1/4") — 16–75 Ohm
CV Range
−5V to +10V
CV Standards
1V/oct, 1.2V/oct, Hz/Volt
Gate Range
3V, 5V, or 10V — V-trig or S-trig
Clock Rates
1 PPS, 2PPQ, 24PPQ, 48PPQ — ±100ms offset, 1/2x / 2x / 4x division
Display
4.3" touch-responsive high-resolution
Rack Mount
Ears included — 6U / 10.5"
Connections
Rear Panel
MIDI In/Out/Thru5-pin DIN
USB Type BClass-compliant MIDI I/O — no drivers
Output L/Mono, R1/4" balanced
Sustain PedalPolarity-sensing on startup
Expression PedalReversible polarity in System pages
VESA Mount75mm × 75mm
Power12V DC barrel jack
Top Panel — CV / Gate
CV Inputs (2)Mod 1, Mod 2 — 1/8" TS
CV Outputs (5)Pitch, Gate, Mod 1, Mod 2, Clock — 1/8" TS
Headphone1/4" — level via Master Volume knob
Pitch CV±99 cents range
Mod CV±3.0V
IMPORTANT: The USB connection is NOT an audio output. Audio only via 1/4" outputs or headphone jack. Master Volume knob is analog and does not transmit its position via USB/MIDI — use CC #7 from a DAW MIDI track to automate level.
Studio Setup — Doug Bell Studio
| Parameter | Value |
|---|---|
| Audio Output | Apollo 16 #2 Inputs 13–14 via DI Pro #4 |
| mioXL USB Host | H7 — Network RTP session: Network Leviasynth |
| Cubase External Instrument | Configured April 2026 — USB SYNTHS folder |
| USB Cable | Long cable needed for H7 reach |
| Physical Mount | Ergotron LX Premium (arriving Friday) on 1.75"×12"×6" walnut board — board ETA next week. Bridges Rack #4/#5 gap. 75mm VESA. Swings to Hydrasynth Deluxe left edge when in use. |
| ASM Manager | Same workflow as Hydrasynth Deluxe — USB firmware/patch management |
| MIDI Quest Pro | Add after Moog One configuration is complete |
ASM Manager: Free from AshunSoundMachines.com. Handles patch/bank import-export, favorites reordering, firmware updates. Same workflow as used for Hydrasynth v2.2.0 update (ASM Manager 1.5.6 over USB, April 2026).
Navigation & Controls
Button Types
Access Buttons (colored letters)
Press to open the parameter page for that module. Multiple presses cycle through pages. Hold one + press another to create a Mod Matrix route shortcut (source → destination).
Function Buttons (white letters)
Make instant changes: toggle features, switch modes, load patches, etc. "Colored letters = select things; white letters = do things."
Soft Buttons (in display)
On Home page: Macro controls (Toggle/Trigger/Switch/Reset behavior set in System). On parameter pages: show parameter value, toggle values, or enter sub-pages.
Control Knobs (8)
Endless encoders above and below display. On Home page = Macro controls. On parameter pages = adjust values. LED rings indicate current value.
Touch-Sensitive Bias Knobs
In the OSC Env Level & Bias section. Touch to read current value without changing it. Only change when you turn them.
Key Navigation Shortcuts
HOME
Return to top level of current mode (Single or Multi). Shows Macros.
EXIT
Back one page. Cancels Initialize, Randomize, Save operations.
SHIFT + button
Secondary function (shown in cyan text under button). Also used to fine-tune values and jump to first/last pages.
Page Up / Down
Lit when additional pages exist. SHIFT + arrow jumps to first or last page.
Patch Knob
Selects adjacent patches. SHIFT + turn = jump between banks.
Left / Right Arrows
Select adjacent patches. SHIFT = jump 10 patches at a time.
INIT (single press hold + soft button)
Reset that parameter to default. Hold INIT + press Access button = initialize entire module. Press INIT twice = initialize entire patch.
RANDOM
Hold + soft button = randomize one parameter. Hold + Access button = randomize module. Press once = randomize entire patch (Generate from scratch or Randomize from patches). Randomization percentage per module configurable.
PANIC
All notes off immediately.
Sound Engine Overview
The Leviasynth engine is built around 8 oscillators per voice, each independently configurable. Oscillators connect to each other via Algorithms — routing diagrams that define which oscillators are carriers (producing sound) and which are modulators (shaping other oscillators). The signal flows through the Digital Filter, then the Analog Filter, then the VCA, then effects.
Pre-Wired Modulation Connections
Env 1 / LFO 1
Pre-wired to Digital Filter — no Mod Matrix route required.
Env 2 / LFO 2
Pre-wired to Analog Filter.
Env 3 / LFO 3
Pre-wired to VCA.
Signal path: Oscillators → Algorithm routing → Digital Filter → Analog Filter → VCA → Pre-FX → Delay → Reverb → Post-FX → Outputs
Oscillators
Oscillator Group Edit (all 8 side-by-side)
MODE
Synthesis mode per oscillator: Phase Mod, Freq Mod, PW Mod, HTE Sync, Phase Distortion 1/2/3.
WAVE
Waveform selection. Over 300 waveforms available.
PITCH
Pitch mode: Semitone, Ratio, or Frequency.
FINE
Fine tune in cents.
FEEDBK
Oscillator feedback amount. Adds harmonics and harmonic distortion.
LEVEL
Oscillator output level into the mix.
Individual Oscillator Pages (press OSC 1–8)
Page 1
Mode, Wave, Pitch (Semitone/Ratio/Freq), Fine, Feedback, Level.
Page 2
Envelope settings per oscillator (from the Osc Env Level & Bias section).
Page 3+
Modulation routing, additional per-oscillator parameters. Each oscillator has 5 pages total (Osc 4 = 5 pages example).
Osc Env Level & Bias
Touch-sensitive knobs for Attack, Decay, Release envelopes per oscillator group, plus Env Level and Bias. Quick relative edits to oscillator envelope rates and harmonic character of a patch.
Solo / Mute
Per-oscillator solo and mute via soft buttons on individual oscillator pages. Not randomized by the Random function.
Bit Reduction
Per-oscillator bit reduction for digital grit and lo-fi textures.
Stereo Osc Mode
Oscillators can be set to stereo mode for inherent spatial width.
Vintage Mode
Authentic recreation of 1980s digital FM character. Introduces period-accurate artifacts and behavior.
Algorithm flexibility: Any oscillator can be a carrier, a modulator, or both simultaneously. Carrier oscillators produce audible output; modulators shape the pitch of other oscillators. A modulator with high Level and Feedback can become a complex waveform source in its own right.
Algorithms — The Framework
Algorithms define how the 8 oscillators are connected — which are carriers, which are modulators, and how modulation chains are structured. The Algorithm thumbnail in the display's Info section shows the current routing as colored dots.
Algorithm Controls
ALGO EDIT button
Opens the algorithm selection and editing page. Turn the Algorithm Select knob (endless encoder) to choose from 140+ factory algorithms.
Factory Algorithms
140+ preset algorithms covering all classic FM topologies and many original configurations. Each is visually represented as a routing diagram.
Custom Algorithms
Create your own routing on the Custom Algorithm page. Any oscillator can modulate any other. Thousands of possible configurations. Custom algorithm stored with the patch.
Algorithm Morph
Morph between two algorithms in real time. Assignable as a Mod Matrix destination or Macro target for performance sweeps.
Classic FM topology reference: A simple 2-op carrier+modulator is Algorithm 1 of classic DX-style FM. The Leviasynth allows 8-op configurations with any-to-any routing, going far beyond traditional FM architectures.
Filters
Digital Filter (Filter 1)
Digital Filter Controls
D. CUTOFF
Digital filter cutoff frequency.
D. RESO
Digital filter resonance. Self-resonates on most filter types (except LP-NO-HP, BP Stn12, LP Gate, LP 1pole, LP 8pole, Vowel).
D. DRIVE / MORPH
Drive (adds harmonic saturation) or Morph (morphs between filter types), depending on selected filter type.
D. ENV 1
Amount of Envelope 1 applied to Digital Filter cutoff. Pre-wired — no Mod Matrix needed.
Filter Types (18)
Two morphing multimode 12dB/oct filters (HP/BP/LP, HP/Notch/LP). 15 variations of HP, LP, and BP from subtle to steep. Our famous Vowel formant filter.
LFO 1 Modulation
Pre-wired LFO 1 to Digital Filter cutoff. Amount set on Digital Filter page.
Keytrack
Cutoff tracking of keyboard pitch.
Velocity → Env
Velocity sensitivity for Env 1 amount.
Analog Filter (Filter 2)
Analog Filter Controls
A. CUTOFF
Analog filter cutoff. 4-pole (24dB/oct) lowpass. Self-oscillates at high resonance.
A. RESO
Resonance. Self-oscillation produces a pure sine at the cutoff frequency.
A. PRE-DRIVE
Pre-filter overdrive. Adds harmonic saturation before the filter. Purple graphic in Info section indicates non-zero value. Disappears when set to zero.
A. ENV 2
Amount of Envelope 2 applied to Analog Filter cutoff. Pre-wired.
LFO 2 Modulation
Pre-wired LFO 2 to Analog Filter cutoff.
Keytrack
Cutoff tracking of keyboard pitch.
Velocity → Env
Velocity sensitivity for Env 2 amount.
Dual filter routing: Digital Filter processes the oscillator mix first, then passes to Analog Filter. Both filters can be used simultaneously for complex tonal shaping — a digital multimode character stage feeding an analog warmth/saturation stage.
Envelopes (5)
Five fully featured loopable ADSR envelopes with Delay and Hold stages. Each envelope can have up to 4 trigger sources. Optional Slow setting for extremely long envelopes.
Envelope Parameters (all 5)
Delay
Pre-attack delay time before envelope begins.
Attack
Attack time. Curve shape selectable.
Hold
Hold time at peak level before decay begins.
Decay
Decay time from peak to sustain. Curve shape selectable.
Sustain
Sustain level.
Release
Release time after note-off. Curve shape selectable.
Loop
Definable loop start and end points within the envelope stages. Creates complex envelope shapes that cycle.
Curve
Curve shape per segment (linear, exponential, logarithmic variations).
BPM Sync
Sync envelope segments to tempo.
Trigger Sources
Up to 4 trigger sources per envelope. Standard note-on, plus assignable MIDI, LFO, or other modulation sources.
Slow Mode
Extends envelope time range to extremely long durations. Also enables super-slow LFO rates.
Default Envelope Assignments
Env 1 / LFO 1
Digital Filter (pre-wired).
Env 2 / LFO 2
Analog Filter (pre-wired).
Env 3 / LFO 3
VCA (pre-wired).
Env 4 / LFO 4
Available for Mod Matrix assignment.
Env 5 / LFO 5
Available for Mod Matrix assignment.
LFOs (5)
LFO Parameters
Waveform
CC numbers: LFO 1 = CC110, LFO 2 = CC111, LFO 3 = CC112, LFO 4 = CC113, LFO 5 = CC114.
Rate
LFO 1 = CC72, LFO 2 = CC73, LFO 3 = CC76, LFO 4 = CC78, LFO 5 = CC80.
Level / Amount
LFO 1 = CC70, LFO 2 = (Analog Filter pre-wired amt = CC59), LFO 3 Level = CC4.
BPM Sync
Sync LFO rate to tempo. Selectable musical divisions.
Slow Mode
Extremely slow LFO rates for very gradual modulation.
Retrigger
Retrigger LFO phase on note-on, or free-run.
VCA, Voice & Glide
VCA Module
VCA Level
CC2 — Overall output level from the VCA stage.
LFO 3 Amount
CC3 — Pre-wired LFO 3 modulation of VCA level (tremolo).
Env 3
Pre-wired Envelope 3 to VCA level (amplitude envelope).
Patch Level
Final output level. Has ultimate control over signal to outputs.
Voice Module (VOICE button)
Voice Mode
Mono, Unison, or Unison Poly. Unison detune amount adjustable.
Polyphony
CC9 — Maximum voice count.
Density
CC10 — Unison voice density.
Detune
CC95 — Unison detune amount.
Pitch Bend Range
Pitch bend range in semitones.
Vibrato
Assignable vibrato settings per patch.
Analog Feel
Emulates analog circuit behavior throughout signal path for organic variation between voices.
VoiceMod
Per-voice variation and modulation. Introduces differences between voices for a living, breathing quality.
Random Phase
Randomizes oscillator start phase per voice.
Panning Options
Multiple panning modes with adjustable stereo width.
Scale
Preset scales with microtonal options and ability to import custom scales. Defined per patch.
Glide
Glide Toggle
CC65 — Enable/disable glide. Dedicated GLIDE button on top panel.
Glide Time
CC5 — Glide time.
Glissando
Time/distance options, programmable trigger mode, curve shaping.
Effects
Delay (5 types)
Feedback
CC14
Time
CC15
Feedback Tone
CC62
Wet Tone
CC63
Dry/Wet
CC92 — All delays sync to tempo. Types include Left-Right-Center and Reverse.
Reverb (4 types)
Time
CC66 — Reverb lengths up to 90 seconds plus Freeze.
Tone
CC67
Dry/Wet
CC91
Pre-Delay
Reverb pre-delay amount.
Damping
High frequency damping of reverb tail.
Pre-FX & Post-FX
Pre-FX Param1 / Param2
CC12 / CC13
Pre-FX Dry/Wet
CC93
Post-FX Param1 / Param2
CC68 / CC69
Post-FX Dry/Wet
CC94
FX Types
Chorus, Flanger, Rotary, Phaser, Lo-Fi, Tremolo, EQ, Compressor, Distortion. Independent or shared between Upper/Lower in Multi mode. Global bypass available for any or all FX modules.
Macros
8 Macros per patch (16 in Multi mode — one set per part). Each Macro can target up to 8 parameters simultaneously. Macros are the primary performance and sound-shaping tools on the Home page.
Macro Parameters (CC16–CC23)
Macro 1–8 Value
CC16, CC17, CC18, CC19, CC20, CC21, CC22, CC23
Balance (Multi)
CC8 — Upper/Lower balance in Multi mode.
Soft Button Response
Toggle, Trigger, Switch, or Reset — set in System → Control Settings → Macro Button.
Creating a Macro
1. Press MACRO ASSIGN
Opens the Macro assignment page showing all 8 Macros.
2. Select a Macro slot
Press its soft button to open its assignment page.
3. Assign a destination
Hold a module's Access button and press the Macro soft button (shortcut), or navigate to the destination parameter and assign directly.
4. Set amount and range
Define min/max range for each Macro-to-destination assignment.
5. Name the Macro
Custom names appear on the Home page display.
Copy Macro Slot
Copy a Macro's assignments to another slot.
Bias Options
Bias values offset Macro output. Saved as Bias Options when saving a patch.
Preset Macro Names: A list of pre-defined Macro name suggestions is available in the Save page. Select from common performance-oriented names for quick labeling.
Mod Matrix
32 modulation routes per patch or Multi part. Sources and destinations cover virtually every parameter. Routes are in addition to the pre-wired connections and Macros, though Macros can be both sources and destinations.
Modulation Sources
LFOs 1–5
All five LFOs available as sources.
Envelopes 1–5
All five envelopes available as sources.
Aftertouch
Channel and poly aftertouch.
MPE
Three MPE dimensions available as sources.
Expression Pedal
Assignable expression pedal input.
CV Inputs
Mod 1 and Mod 2 CV inputs from the top panel.
MIDI CC
Any MIDI CC number as a source.
Velocity
Note velocity.
Macros
Any of the 8 (or 16) Macros.
Modulation Destinations
Any Leviasynth Parameter
Including another modulation route.
Arpeggiator
Arp parameters as destinations.
Sequencer Tracks
Track parameters as destinations.
Macros
Modulate a Macro value from an external source.
CV Outputs
Mod 1 and Mod 2 CV outputs.
MIDI CC Out
Any MIDI CC number as a destination — for controlling external gear.
Mod Matrix Shortcuts
Quick Route
Hold one Module Access button (source) and press another (destination) to create a route instantly.
Direct Assignment
From any parameter page, assign that parameter as a Mod Matrix destination directly.
Copy Mod X to Mod Y
Duplicate a mod route to another slot.
Clear Slot / Clear All
Clear a single route or the entire matrix.
Be Random
Randomize the Mod Matrix for experimental routing.
Arpeggiator
Arpeggiator Parameters
ARP ON
Toggle arpeggiator. SHIFT + ARP ON = enter Arp Edit mode page 1.
ARP LATCH
Latch notes so hands are free to tweak parameters. Works with or without Arp running.
Modes
8 modes with direction, octave, chord, and phrase options.
Ratchet / Chance / Entropy
Variations for generating interesting and evolving patterns.
Arp Length
Definable arpeggio length.
Phrases
64 preset + 64 user phrases. User phrases can be created from Sequencer tracks.
Swing
Range: 25–75%.
Tap Trigger
Tap to advance the arpeggio step manually.
Arp → Seq
Convert an arpeggio pattern to a Sequencer track.
MIDI Output
Arp can transmit its output via MIDI for external device sequencing.
Sequencer
Sequencer Overview
Track Structure
2 polyphonic note data tracks + 1 Macro track per patch. Note tracks record pitch, pitch bend, mod wheel, and polyphonic aftertouch.
Macro Track
8 lanes of parameter automation (one per Macro). Records all Macro movements.
Steps
Up to 128 steps per track. Definable per step: MultiTrig, Drift, Probability.
Play Modes
Parallel (all tracks simultaneously) or Series (one note track + Macro track).
Recording
Real-time or step record mode. Hold SEQ REC + press SEQ PLAY to begin.
Track Routing
Each track can route to internal sound engine, external MIDI device, CV output, or all simultaneously.
Mute / Unmute
Tracks can be muted independently during playback.
Independent Length
Each track can have its own length and playback mode for polyrhythmic sequences.
Step Edit
Edit individual steps: note value, length, velocity, chord, probability, drift, MultiTrig.
Tap Rhythm
Transform a track into a new rhythm by tapping.
Track Operations
Shift (rotate steps), Transpose, Conform to Scale, Random generation of step content, Shuffle step order.
Record from MIDI
Tracks can record incoming MIDI from external devices.
Pad Mode = Step Seq
Pads become step buttons for visual step entry and editing.
Saving
Sequences are saved with each patch. Save the patch before selecting a new one to preserve sequences.
Seq → Arp
Export a Sequencer track as an Arpeggiator user phrase.
Sequence save reminder: Sequence data is stored with the patch. Initializing a patch does NOT erase track data — must hold INIT + press SEQ REC + press INIT again to erase all tracks.
Multi Mode
Multi mode layers or splits two independent 8-voice patches. 5 banks of 128 Multi patches. Each Multi holds Upper and Lower parts.
Multi Mode Overview
Dual Mode
Both parts play across the full keyboard. Velocity switch point with adjustable crossfade.
KeySplit Mode
Keyboard split between Upper and Lower. Definable split point with adjustable crossfade.
Balance (CC8)
Upper/Lower level balance controlled by Balance knob and CC8.
Independent Octave Ranges
Each part has its own octave range. Not saved with Multi patch — reset when new Multi selected. Set via Multi Edit mode.
Edit Both / Upper / Lower
BOTH button edits parameters for both parts simultaneously. UPPER / LOWER buttons select individual parts. Top panel color scheme changes to indicate active part.
Macros in Multi
Up to 16 Macros (8 per part). Macros can target Upper, Lower, or Both parts.
Effects in Multi
Effects can be independent per part or shared between parts.
Arp in Multi
Each part can have its own arpeggiator settings.
MIDI in Multi
Parts can be on separate MIDI channels. Sustain pedal, wheels, and ribbon can control Upper, Lower, or Both.
Copy to Single
Upper or Lower patch can be copied to Single mode for independent use.
Overflow (two units)
Two Leviasynth units can be linked for 32-voice polyphony in Single mode.
CV / Gate Section
CV Outputs (5, top panel, 1/8" TS)
Pitch
Pitch CV output. Standards: 1V/oct, 1.2V/oct, Hz/Volt. Range: ±99 cents tuning.
Gate
Gate output. Range: 3V, 5V, or 10V. Type: V-trig or S-trig.
Mod 1 / Mod 2
Assignable CV outputs. Range: ±3.0V. Assign any Mod Matrix source to output here.
Clock
Clock output. Range: 3V, 5V, or 10V. Rates: 1PPS, 2PPQ, 24PPQ, 48PPQ. Offset: ±100ms. Division: 1/2x, 2x, 4x.
CV Inputs (2, top panel, 1/8" TS)
Mod 1 / Mod 2
External CV inputs. Range: −5V to +10V. Assign as Mod Matrix sources to any internal parameter.
Esoteric CV Uses
CV Attenuator
Use Leviasynth to scale an incoming CV before routing it.
CV Inverter
Invert an incoming CV signal.
CVs and Arpeggios
Route CV to control Arp parameters for externally-driven arpeggio variation.
CV Polyphony
CV/Gate outputs can be configured for polyphonic operation across multiple voices.
Modular integration: The CV section provides full bidirectional communication with modular synthesizers. Leviasynth can both drive modular patches and be driven by them. Configure CV voltage standards, gate types, and clock rates in System → CV Gate Settings.
MIDI Settings
MIDI Page 1 — TX and RX
TX / RX Channel
Transmit and receive channels. Single mode: one channel. Multi mode: Upper and Lower can use separate channels.
Local Control
Enable/disable local control (keyboard driving internal sounds vs. MIDI only).
Clock Sync
Sync Arp/Seq to incoming MIDI clock, or transmit clock to external devices.
MPE
MPE support for per-note pitch, pressure, and slide expression.
Bank/Program Change
MIDI bank select (CC0 MSB, CC32 LSB) and program change for patch recall.
MIDI Page 2
Aftertouch Transmit
Channel aftertouch transmit on/off.
Transport Messages
Send/receive MIDI transport (Start/Stop/Continue) for DAW sync.
Overflow
Link two Leviasynth units for 32-voice polyphony. Single mode only.
MIDI Page 3
Parameter TX / RX
Enable MIDI CC transmission and reception for parameter automation.
NRPN
Non-Registered Parameter Numbers for high-resolution parameter control.
Program Change TX / RX
Enable/disable program change reception and transmission.
Arp Seq TX
Transmit arpeggiator/sequencer output via MIDI for external sequencing.
Select and Send SysEx
Patch dump and recall via SysEx for librarian use (MIDI Quest Pro).
Patch Management
Browse Page
Sort Methods
Sort by Name or Number.
Filter List
Filter by Bank, Category, Sound Designer.
Compare
Compare edited patch against saved version.
Favorites
Tag patches as Favorites. Dedicated FAVORITE button for instant access. Unlimited favorites. Reorder via ASM Manager for live set management.
Save Page
Name the Patch
Full name entry via display.
Select / Create Category
Assign to existing or new category.
Choose a Color
Color-coded patches for visual organization.
Macro Options
Save with or without Macro assignments. Save Bias values.
Patch Protection
Protect patches from accidental overwrite.
Patch Backup
Full backup/restore via ASM Manager.
System Pages
Master Settings Page 1
Safe Edit
Prevents accidental edits by requiring confirmation before changes are made.
Auto Power
Auto power-off timer.
Local Control
Keyboard driving internal engine on/off.
Tempo Lock
Lock tempo so patch changes don't reset it.
Master Limiter
Global output limiter. Toggle on display Info section (CLIP/LIMIT icon).
Master Settings Page 2
Microtuning
Access preset standard and microtonal scales, or import custom scales.
Pad Settings
Velocity response curve, aftertouch sensitivity for the 16 pads.
Knob Mode
Jump, Catch, or Relative modes for the 270° encoder knobs.
Knob Speed
Sensitivity of Control knobs.
Macro Button
Set soft button behavior: Toggle, Trigger, Switch, or Reset.
FX Bypass Menu
Global bypass settings for individual FX modules.
Expression Pedal Setup
Calibrate and set polarity of expression pedal.
Display Settings
Brightness, LED ring brightness for darkened rooms.
CV Gate Settings
Page 1
CV standard (1V/oct, 1.2V/oct, Hz/Volt), Gate type (V-trig / S-trig), Gate voltage (3V / 5V / 10V).
Page 2
Clock division settings, CV Mod assignments for Mod 1 and Mod 2 outputs.
Calibration
VCF calibration procedure. System Services for advanced calibration.
Custom INIT Patch
System Services
Define a custom INIT patch — Leviasynth will use your preferred default settings (filter starting position, envelope shapes, etc.) as the base for every new patch.
MIDI CC Map
| CC | Module | Parameter |
|---|---|---|
| 0 | Global | Bank Select MSB |
| 1 | Global | Modulation Wheel |
| 2 | VCA | Level |
| 3 | VCA | LFO 3 Amount |
| 4 | LFO 3 | Level |
| 5 | Voice | Glide Time |
| 7 | Global | Master Volume |
| 8 | Multi Edit | Balance |
| 9 | Voice | Polyphony |
| 10 | Voice | Density |
| 11 | Global | Expression Pedal |
| 12 | Pre-FX | Param1 |
| 13 | Pre-FX | Param2 |
| 14 | Delay | Feedback |
| 15 | Delay | Time |
| 16 | Macro 1 | Value |
| 17 | Macro 2 | Value |
| 18 | Macro 3 | Value |
| 19 | Macro 4 | Value |
| 20 | Macro 5 | Value |
| 21 | Macro 6 | Value |
| 22 | Macro 7 | Value |
| 23 | Macro 8 | Value |
| 24–31 | OSC 1–8 | Initial Level |
| 32 | Global | Bank Select LSB |
| 33–41 | OSC 1–8 | Pitch (OSC 1=33, 2=34, 3=35, 4=36, 5=37, 6=39, 7=40, 8=41) |
| 42–49 | OSC 1–8 | Feedback (OSC 1=42, 2=43, 3=44, 4=45, 5=46, 6=47, 7=48, 8=49) |
| 50 | Digital Filter | Morph |
| 51 | Digital Filter | Keytrack |
| 52 | Digital Filter | LFO 1 Amount |
| 53 | Digital Filter | Velocity → ENV |
| 54 | Digital Filter | ENV 1 Amount |
| 55 | Digital Filter | Cutoff |
| 56 | Digital Filter | Resonance |
| 57 | Analog Filter | Pre-Drive |
| 58 | Analog Filter | Keytrack |
| 59 | Analog Filter | LFO 2 Amount |
| 60 | Analog Filter | Velocity → ENV |
| 61 | Analog Filter | ENV 2 Amount |
| 62 | Delay | Feedback Tone |
| 63 | Delay | Wet Tone |
| 64 | Global | Sustain Pedal |
| 65 | Voice | Glide (Toggle) |
| 66 | Reverb | Time |
| 67 | Reverb | Tone |
| 68 | Post-FX | Param1 |
| 69 | Post-FX | Param2 |
| 70 | LFO 1 | Level |
| 71 | Analog Filter | Resonance |
| 72 | LFO 1 | Rate |
| 73 | LFO 2 | Rate |
| 74 | Analog Filter | Cutoff |
| 75 | LFO 2 | Level |
| 76 | LFO 3 | Rate |
| 77 | LFO 4 | Level |
| 78 | LFO 4 | Rate |
| 79 | LFO 5 | Level |
| 80 | LFO 5 | Rate |
| 81–84 | ENV 1 | Attack(81), Decay(82), Sustain(83), Release(84) |
| 85–88 | ENV 2 | Attack(85), Decay(86), Sustain(87), Release(88) |
| 89–90, 96–97 | ENV 3 | Attack(89), Decay(90), Sustain(96), Release(97) |
| 91 | Reverb | Dry/Wet |
| 92 | Delay | Dry/Wet |
| 93 | Pre-FX | Dry/Wet |
| 94 | Post-FX | Dry/Wet |
| 95 | Voice | Detune |
| 102–105 | ENV 4 | Attack(102), Decay(103), Sustain(104), Release(105) |
| 106–109 | ENV 5 | Attack(106), Decay(107), Sustain(108), Release(109) |
| 110–114 | LFO 1–5 | Waveform (LFO1=110, LFO2=111, LFO3=112, LFO4=113, LFO5=114) |
| 123 | Global | All Notes Off |