Item number: 20053556

ASM Hydrasynth Keyboard


HYDRASYNTH is THE dream synth for both sound designers and musicians. Its sound generation is designed for maximum flexibility. At the same time, the user interface has been optimised for minimal paging and an intuitive workflow. The exceptionally robust synthesizer features 3 oscillators with the advanced Wave Morphing Synthesis engine, which can access a pool of 219 waveforms. As a special feature, oscillator 1 and 2 have wave scanning, which allows you to morph between up to 8 waveforms. A total of four mutators can be used to further deform the oscillator signals, including FM, three different types of pulse width modulation (PWM), hard sync, harmonic sweep and wavestack, which creates five mutually adjustable copies of the oscillator for ultra-fat and wide sounds – The sonic possibilities are almost unlimited.

If the oscillators are the heart of a synthesizer, the filters are the soul: The eight-voice, monotimbral HYDRASYNTH has two independent filters that can be connected in series or parallel. Filter 1 has 11 different filter models (12, 24 db, HP, LP, vocal, etc.). The second multimode filter works with 12 dB per octave including a continuous sweep from low pass to band pass to high pass, comparable to classic SEM filters. Four effects refine the extensive sound generation: Delay and reverb (incl. cloud) are fixed, the remaining pre- and post-effects can be chosen from various algorithms such as chorus, flanger, rotary, lo-fi, tremolo, compressor and others.

The debut of Ashun Sound Machines (ASM) also sets new standards for the keyboard: The 49-key velocity-sensitive keyboard features the completely newly developed Polytouch keybed, which offers polyphonic aftertouch for each of the 8 voices. This results in an expressive control that can only be found on a few vintage synths (e.g. Ensoniq VFX). A 4-octave ribbon controller and ergonomically designed, illuminated pitch and modulation wheels allow expression and control unlike any other hardware synthesizer on the market. Of course, a sophisticated, programmable arpeggiator is also included.

The modulation sources have not been stingy either. No less than 5 loopable DAHDSR Hüll curves as well as 5 tempo-synchronous LFOs with numerous waveforms and various trigger modes (plus a sixth vibrato LFO via the mod wheel) provide plenty of movement in the sound. A massive modulation matrix with 32 slots connects internal sources as well as MIDI-CCs to their destinations.

ASM has of course also thought of live use: 8 high-resolution encoders including LED rings can be freely routed to desired parameters and changed live. OLED displays ensure perfect readability. In addition to 2 Bänke with a total of 256 presets, 3 further Bänke with 128 patches each are available for saving your own sounds.

On the connection side, MIDI and USB are not only the usual connectors, but also analogue clock and CV/gate inputs and outputs, via which analogue control voltages and clock signals can be integrated into the modulation matrix. The HYDRASYNTH works not only with 1 volt per octave, but also with the Hz/Volt standard, which was used, for example, by earlier Korg synthesizers. MIDI is available as a classic trio (In/Out/Thru) and via USB.

  • Digital wavemorphing synthesizer
  • 49 full-sized keys
  • High-quality polytouch keyboard including velocity and aftertouch
  • 8 voices, monotimbral
  • Full polyphonic aftertouch
  • High-quality and robust metal case
  • Arpeggiator including ratchet, chance, gate time & Swing (8 modes)
  • 3 oscillators with 219 single-cycle waveforms
  • WaveScan parameters to modulate through wavetables
  • Wavelist mode to Ü8 user-defined wavelists per oscillator
  • Mixer including noise generator and ring modulator
  • 2 filters (serial or parallel)
  • Filter 1 with 11 different filter models (12 & 24 db ladder, vintage ladder, HP, LP, vocal a. o.)
  • Filter 2 with 11 different filter models (12 & 24 db ladder, vintage ladder, HP, LP, vocal a. o.)
  • Filter 2 with 11 different filter models (12 & 24 db ladder, vintage ladder, HP, LP, vocal a. o.)
  • Filter 2: 12 dB (SEM style) per octave incl. continuous sweep from low pass to high pass
  • Oscillators 1 and 2 each have 2 mutants incl. FM linear, wavestack™, hard sync, pulse width, PW squeeze, PW ASM, harmonic sweep
  • 4 octaves ribbon controller (67 cm) incl. theremin mode
  • . Theremin Mode
  • Modulation Matrix
  • 32 user-definable modulation routings
  • 5 DAHDSR Hüll curves
  • 5 LFOs (incl. Sine, Triangle, Square, Saw up, Saw down, S&H, Low random, Noise, Pulse width a.o.)
  • LFO’s incl. Delay, Fade In, 3 trigger modes, glow, start phase, one-shot mode
  • 5 Bänke with a total of 128 patches
  • 256 factory patches
  • CV gate inputs and outputs
  • CV gate outputs
  • CV gate outputs
  • ;8 high-resolution encoders including LED rings
  • OLED displays
  • Patch macros
  • Supports all common CV/GATE standards
  • V-trig, S-trig: 3.5 and 10 volts
  • 1 volt per octave +/-5V, 1 volt per octave 0-10V, Hz to volts +/-5V, Hz to volts 0-10V
  • Clock input and output (1 PPS, 2 PPQ, 24 PPQ, 48 PPQ)
  • Clock voltage: – 3, 5, 10 and 10 volts
  • USB (USB MIDI In/Out)
  • PC/MAC-based Patch Manager plugin
  • Pre and post effects for unique sound processing
  • Delay & Reverb
  • Aluminium side panels
  • Expression pedal input
  • Sustain pedal input (automatic detection of polarity)
  • Dimensions: 800 x 350 x 103 mm
  • Weight: 10 kg
Please note that this item is offered as B-stock and may therefore have slight optical defects. The original packaging may be damaged or missing. B-goods are checked by us for full functionality and sold as technically flawless. Of course, there are no di
Technical data






LINE OUT L/R - jack 6.3mm
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