The ASM Leviasynth Keyboard is a 16-voice hybrid algorithmic synthesiser with eight oscillators per voice, dual analogue and digital filtering, advanced modulation, and performance controls that merge classic synthesis principles with contemporary expressive technologies. Core Synthesis Architecture The Leviasynth builds its sound around an algorithmic engine where eight oscillators per voice interact through structured algorithms rather than simple layering, allowing complex internal modulation, feedback, and spectral movement. ASM implements 144 preset algorithms alongside one user-customisable algorithm per patch, while real-time algorithm morphing enables continuously variable oscillator relationships instead of static routings. Each oscillator accesses over 300 waveforms and seven independent oscillator modes, including phase modulation, frequency modulation, pulse width modulation, HTE sync, and three distinct phase distortion models, ensuring broad timbral range from pristine digital clarity to aggressively harmonically rich textures. A 32-slot modulation matrix connects five per-voice LFOs and five shared envelopes, with additional individual volume envelopes per oscillator, giving designers granular control over dynamics, movement, and articulation. Filters and Tone Shaping The Leviasynth employs a dual-filter topology that pairs a digital multimode filter with a true analogue low-pass filter, expanding tonal flexibility beyond traditional subtractive designs. The analogue filter delivers a 24 dB per octave response with pre-drive saturation and self-oscillation, enabling both smooth warmth and resonant leads, while the digital filter provides 18 models that range from classic low-pass, band-pass, and high-pass types to emulations such as MS20, Steiner-Parker, and vowel filtering. Two insert effects and two master effects operate simultaneously, alongside nine insert processors, five delays, and four reverbs, allowing extensive sound sculpting within a single patch without external processing. Performance Controls and Playability A 61-note ASM Polytouch polyphonic aftertouch keybed supplies per-note pressure sensitivity that surpasses conventional channel aftertouch, and the four-octave ribbon controller adds continuous pitch and timbral modulation across the performance surface. MPE compatibility allows multidimensional expression when paired with compatible controllers, while traditional pitch bend and mod wheel remain fully integrated into the modulation system. The instrument supports both Single mode, which allocates all 16 voices to one patch, and Multi mode, which splits resources into two independent eight-voice parts for layers or keyboard splits. Sequencing, Arpeggiation, and Control A three-track sequencer captures both note data and macro automation, letting performers embed evolving modulation within patterns rather than relying solely on external devices. The arpeggiator introduces an Entropy function that manipulates note probability, order, and rhythmic behaviour in real time, moving beyond conventional up and down patterns into more organic, evolving sequences. Eight assignable macro controllers provide high-level parameter control, while a comprehensive randomiser offers two variable modes for structured or chaotic patch generation. Connectivity and Integration The Leviasynth includes balanced stereo outputs, dual headphone sockets with independent volume control, USB Type-B for MIDI and patch management, and full MIDI In, Out, and Thru. Two expression and sustain pedal inputs support external performance control, while two modulation inputs and five CV, Gate, and Clock outputs integrate the instrument with modular and semi-modular systems. The free ASM Patch Manager for Mac and PC handles firmware updates and patch organisation, ensuring long-term system stability and compatibility. Presets, Storage, and Microtuning Factory content delivers 512 Single mode and 256 Multi mode patches created by professional sound designers, with internal storage expanding to 1,024 Single and 640 Multi patch locations. Microtuning support enables alternative scales, making the Leviasynth suitable for experimental, academic, and non-Western musical applications. Why Choose the ASM Leviasynth Keyboard Inspires deep sound design without sacrificing immediacy Feels expressive enough for virtuosic performance Bridges modular-style flexibility with a self-contained instrument Handles cinematic textures and punchy leads with equal authority Integrates smoothly with both MIDI and CV-based setups
