ASM Leviasynth Keyboard is a hybrid algorithmic synthesizer from Ashun Sound Machines. Offering 16 voices with 8 oscillators per voice and a combination of analog and digital filters, Leviasynth is truly a sound designer's dream synthesizer. The 61-note Polytouch polyphonic aftertouch keybed together with the 4-octave ribbon controller offers an unsurpassed playing experience, and Leviasynth is also MPE-compatible.
- Algorithmic synthesis engine with morphing
- 16 voices with 8 oscillators per voice
- Oscillator modes: phase modulation, frequency modulation, pulse width modulation, HTE sync, phase distortion
- 300+ waveforms and 140+ preset algorithms and custom algorithm mode for user-defined routing
- Dual filters: digital filter with 18 models + analog 4-pole filter with pre-drive
- 13 DAHDSR envelopes with looping, BPM sync modes and more
- 5 LFOs with sine, triangle, saw, ramp, square, random, noise and step shapes
- 32-slot modulation matrix with 170 sources and 425 destinations
- Sequencer with 2 polyphonic note tracks + 1 macro automation track
- 61-key semi weighted Polytouch keybed with polyphonic aftertouch
- 4 octave Ribbon controller with multiple modes
- Backlit wheels and touch-responsive display
- Tour-ready metal chassis
- ASM Manager patch management and backup
Sound generation
With its 16-voice digital/analog hybrid synthesis engine, Leviasynth takes a unique approach by providing 8 oscillators with over 300 waveforms available, as well as a range of unique synthesis types including phase modulation, linear frequency modulation, pulse width modulation, HTE sync and three types of phase distortion. It is capable of 16 voices that can be split and layered in two parts and has the ability to combine voices into stereo binaural voices. The 8 oscillators and 7 synthesis types can then be arranged using one of over 140 preset algorithmic combinations; you can also craft your own custom algorithm and store it in the patch. Leviasynth also features algorithm morphing, which lets you select 8 algorithms, place them in any order and modulate smoothly between them.
Dual filters
This uniquely powerful sound generator is then fed into the powerful Hydrasynth digital filter section, which includes 18 digital filter models as well as morphing and digital drive. From there, the sound is further sculpted by a custom analog variable pre-drive circuit for intense analog warmth before passing into the pure analog 4-pole resonant filter. This is hybrid synthesis like you have never heard before.
Modulation
Leviasynth inspires creativity with a staggering 13 envelopes, 5 LFOs, a 32-point modulation matrix and a host of dedicated modulation routings for easy access. Each oscillator features its own dedicated 6-stage DAHDSR envelope with looping, BPM-syncable stages, multiple trigger sources and quantizing. LFOs feature multiple waveshapes including sample and hold, noise and a custom step LFO mode that allows LFOs to double as independent step sequencers or custom waveshapes. Both envelopes and LFOs feature fast and slow modes, enabling exceptionally wide timing of modulation rates. The VoiceMod section allows for each voice to have its own offset, which can be used as a modulation source. Additionally, 8 macros per part, each with 8 individually assignable sources, are available for immediate control. ASM's patented Polytouch keybed has dedicated routings throughout the engine for immediately responsive modulation per note, as well as the ability to be assigned in the modulation matrix.
Voice and effects
Vintage mode increases modulation depth while dropping modulator resolution for a more classic, glassy tone. Bit depth lets you take the synth from clean and classy to dirty and raw. Turning Snap off gives you the character of the Leviasynth's VCA, while enabling Snap gives you the sub-millisecond timing of a DCA. OSC Stereo mode pairs voices into binaural oscillator and filter sets, extending into the synthesis algorithms with independent panning for modulators, carriers or both. Analog Feel allows for subtle per-voice modulations at the twist of a knob, enabling a moving vibrancy of sound from clean and sharp to drifting and dirty. Multiple polyphony modes – including mono, unison and polyphonic unison – with voice limiting, unison detune and panning rotation provide flexible stacking and performance options, while glide and glissando (distance and time modes) support expressive playing techniques. Leviasynth features 4 effects processors per part that can be used at one time, featuring 18 digital effects ranging from modulation effects to distortions, delays, reverbs and more.
Performance
Leviasynth Keyboard features an enhanced semi-weighted 61-key Polytouch keybed with polyphonic aftertouch, along with note-on and note-off velocity for detailed performance control. A 4-octave ribbon controller offers multiple expressive performance modes, and illuminated pitch and modulation wheels deliver a tactile and responsive control. Leviasynth's full-color touchscreen provides intuitive editing and clear visual feedback. For note and pattern generation, Leviasynth offers a versatile eight-mode arpeggiator with ratchet, chance, and Entropy Shuffle functions, alongside a three-track sequencer featuring drift and probability controls. The arpeggiator and sequencer can operate independently or interact with each other, supported by dedicated performance controls. Many parameters in the sequencer and arpeggiator can even be modulation destinations, allowing them to be manipulated in real time. Dedicated hands-on control over both digital and analog filters, along with a unique capacitive-touch Envelope Bias control section, deliver immediate response and expressive, performance-focused shaping.
Patch management via ASM Manager
Patch management is essential to keeping Leviasynth organized and performance-ready. ASM Manager lets you quickly arrange preset banks and favorites, safely back up or restore your entire Leviasynth memory, and perform device updates. Using a high-speed transfer protocol, ASM Manager can back up or restore the full instrument and transfer patches in seconds. Export preset lists, sort patches by number, name, designer, category or patch color, and easily rename, rearrange or move patches and banks with a single click. Create new banks or import patch libraries to expand your sound palette effortlessly.
| Specification | Value |
|---|---|
| SKU | ASM-LSKB |
| Model Name | Leviasynth Keyboard |
| Vendor | Ashun Sound Machines |
| Aftertouch | Yes |
| Analog Digital | Hybrid |
| Built In Speakers | No |
| Included From Manufacturer | Power supply |
| Number of Keys | 61 |
| Key Size | Full Size Keys |
| Midi | In, Out, Thru, and USB |
| Mono Poly | Polyphonic |
| MPN | LSKB |
| Product Unique Features |
|
| Key Action | Polytouch synth action keybed with velocity and polyphonic aftertouch |
| Number of Patches/Programs |
Single mode: 8 banks × 128 patches Multi mode: 5 banks × 128 multi patches Favorites system and randomization options |
| Voices of Polyphony | 16 |
| Oscillators per Voice | 8 |
| Multitimbral Capability | 2 parts with split, layer and stereo binaural options |
| Effects |
Pre and post effects sections 4 reverb types with freeze and up to 90 seconds of decay 5 delay types with tempo sync Chorus, flanger, rotary speaker, phaser, lo-fi, tremolo, EQ, compressor, distortion |
| Sequencer |
2 polyphonic note tracks Macro automation track Up to 128 steps per track with probability and drift options |
| Arpeggiator |
8 modes with ratchet, chance, entropy Chord mode |
| USB Port (to Host) |
MIDI Patch manager |
| Audio Outputs |
Dual stereo balanced 1/4" main output 1/4" stereo headphone output 1/8" stereo headphone output |
| Control Connections |
1/4" sustain footswitch input 1/4" expression pedal input |
| Onboard Controllers |
4-octave ribbon controller with multiple modes Pitch bend and mod wheels |
| Width | 38" |
| Depth | 13.62" |
| Height | 4.55" |
| Product Weight | 26.9 lb |
Ashun Sound Machines products are covered by Ashun Sound Machines's limited 2-year warranty. Ashun Sound Machines warrants products to be free of defects in materials and workmanship for 2 years from the original purchase date. This is a retroactive warranty. You will need a copy of your purchase receipt, from an authorized Ashun Sound Machines dealer, to verify your purchase date. Ashun Sound Machines cover any workmanship or parts failures that are not attributed to abuse or misuse. Please contact Ashun Sound Machines for a return authorization. For more information please visit www.ashunsoundmachines.com.
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