ASM Leviasynth Desktop Hybrid Algorithmic Synthesizer

ASM Leviasynth Desktop 16 voices, 8 oscillator algorithmic synthesizer with analog filters

Leviasynth is built for deep sound design and expressive performance, offering 16 voices, 8 oscillators per voice, and a powerful algorithm-based synthesis architecture combining digital and analog sound shaping.

From the depths of the sonic seas a new monster rears its head: Leviasynth

rom the beginning ASM has strived to create synthesizers that challenge the status quo. Leviasynth® continues this tradition, elevating both studio and stage with a solid steel chassis, enhanced Polytouch polyphonic aftertouch pads, and an all-new hybrid digital / analog synthesis engine. Leviasynth is an unflinching masterpiece of sonic potential. The 8 oscillators, 13 envelopes, 5 LFOs, 18 digital filter modes, and 4-pole analog low pass filters inspire creativity and live performances. Flexibility abounds, with two layers of synthesis that can be stacked or split, the ability to pair voices into binaural stereo mode with independent modulation of carrier and modulator signals, as well as various voice allocation modes. All this paired with the onboard 3-track sequencer and powerfully flexible arpeggiator, Leviasynth takes you to the depths of synthesis like never before. From thundering bass to cutting leads, screaming organs to bombastic brass, warm keys to elevated ambience, Leviasynth surges forth.

Leviasynth Desktop Features

• Complex hybrid algorithmic desktop synthesizer
• 16-voice polyphony with 8 oscillators per-voice
• 32-slot modulation matrix
• Dedicated 3.5mm CV I/O
• 16 velocity-sensitive pads with aftertouch
• Both analog and digital filters
• Master and insert effects engines
• Multi-color touch screen interface
• 3-track sequencer for recording notes and macro automation
• 1024 Single mode patches, 640 Multi mode patches
• MPE-compatible
• ASM Patch Manager for Mac and PC for patch management and firmware updates

Sound Generation

With an all-new 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.  If this didn’t offer enough options, we also feature Algorithm morphing which lets you select 8 algorithms, place them in any order and modulate smoothly between them. 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

Synthesis is all about movement of sound…and Leviasynth moves like a serpent through water. It inspires creativity with a staggering 13 Envelopes, 5 LFOs, a 32-point modulation matrix, and a host of dedicated modulation routings for easy access. Leviasynth features 42 internal modulation sources and over 290 modulation destinations (not including MIDI CCs and external CV modulation). 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. Our 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 pads have 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

In the Voice section Leviasynth gives you control over quite a few parameters, which makes it possible to truly shape the character of the synth to your liking. 

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 modes, 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 is available in both keyboard and desktop/rack/VESA configurations. The desktop/rack/VESA version replaces the keyboard with 16 Polytouch®-enabled pads, providing an equally expressive alternative in a compact form factor. The 16 Polytouch® pads offer multiple pad modes such as step sequencer control, scale, and pad offsets.

Both versions include a full-color touchscreen for 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 a dedicated performance control screen. 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.

The Leviasynth desktop features dedicated sequencer and arpeggiator touchscreen pages. These provide you with immediate control over sequencer playback, arming of tracks as well as access to additional parameters.

ASM Manager – Total Patch Control

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.