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Ashun Sound Machines

Hydrasynth Deluxe

Available Immediately
Product number: CV4010

16-Voice Dual Sound Engine Digital Synthesizer


16-Voice Dual Sound Engine Digital Synthesizer

The HYDRASYNTH DELUXE is the flagship Hydrasynth, offering a dual sound engine setup and the largest ASM PolyTouch® polyphonic aftertouch keybed to date. The user interface is designed with the utmost attention to detail and offers a rapid workflow.  Each of the two sound engines features 3 Oscillators, dual Wave Mutators and 2 filters, that can be configured in series or parallel. Both of the sound engines has its own separate balanced analog audio outputs. The tone generating capabilities are simply unmatched. As for the performance capabilities, The HYDRASYNTH DELUXE has our proprietary 73-note Polytouch™ keybed that offers polyphonic aftertouch over each note, giving you the type of expressive control found only in certain vintage synths. Add to this a 4 octave ribbon controller and ergonomically designed pitch and mod wheels and you have expression and control that is not equaled in any other hardware synthesizer on the market… Today or ever.

73-Key PolyTouch Keybed

The HYDRASYNTH DELUXE features the ASM Polytouch® 73-note semi-weighted keybed, allowing both ON/OFF velocity and aftertouch as well as full polyphonic aftertouch. In recent years companies have been trying to find ways to give the keyboard musician more ways to better express themselves. The problem is that their solution is almost never a keyboard, so you have to learn a new technique to play them. The Polytouch™ 73-note keybed features high quality, standard sized keys, so you can start playing it instantly.

Dual Sound Engine 

The HYDRASYNTH DELUXE offers 16 voices of polyphony in SINGLE mode, that can be split into two completely separate 8 voice sound engines in MULTI mode. The two MULTI modes for separate sound engine operation includes KEYSPLIT which creates classic keyboard splitting between two patches, and DUAL which enables layering of two patches over the whole keyboard. A dedicated balance knob for direct adjustment of the mix between LOWER and UPPER parts of the MULTI patch is available on the panel, as well as separate stereo audio outputs and MIDI channel assignments for true bi-timbral operation.


Oscillators 1 & 2 are routed into our MUTATORS. The Mutators allow you to modulate, bend and sculpt the sound in new (and old) ways. Each MUTANT allows you to choose from the following processes. The Mutant's can also generate its own waveforms in both FM and Sync modes so that you do not have use another oscillator....Of course the routing is flexible so you can choose the other oscillators as mod sources if you like.

CV/Gate, Midi, USB

The HYDRASYNTH DELUXE can have separate MIDI channels assigned to its LOWER and UPPER part in MULTI mode. The CV/GATE settings will respond to the UPPER part. There is the standard MIDI and USB/MIDI interfaces on the synth but we go deeper and allow the use of CV/GATE interfaces for connecting to the modular world. It supports the standard voltages for Eurorack modulars, the 1.2V per octave Buchla standard, as well as some of the Japanese Volts>HZ products. The MOD in and outs allow for modulation from DC to full audio ranges, expanding your modulation capabilities.

Physical Specifications:

Metal Chassis
  • Steel top and bottom
  • Aluminum side panels

PolyTouch© Keybed

  • Semi-weighted
  • Polyphonic aftertouch
  • Note On and Note Off Velocity

4 octave (67 cm, 26.4”) Ribbon controller

  • Pitch bend mode
  • CC control mode – modulation source
  • Theremin mode - triggers envelopes and plays pitch (Continuous pitch or choose from multiple scales)
CV gate input and outputs: Support multiple CV/GATE standards
  • CV: volt per octave, Hz to Volts, 1.2V per octave
  • Gates: V-trig, S-trig, 3V, 5V, 10V
  • Mod In/Out range: +/5V, 0-10V, 0-5V, 0-1V
  • Clock in and out: 1PPS, 2PPQ, 24PPQ, 48 PPQ & 3v, 5V, 10V
  • Voice overflow mode for expanding voices with another Hydrasynth
Expression pedal input
Sustain pedal input
  • Polarity sensing input​
DC input jack

USB port
  • Supports USB MIDI In/Out
  • 1131 x 359 x 119 mm
  • 44.5” x 14.1” x 4.7” (inch)
  • 13.5 kg (29.8 lbs)

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