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Ashun Sound Machines Hydrasynth Desktop Synthesizer

Hydrasynth Desktop Synthesizer with 24 PolyTouch Pads, 5 banks of 128 Patch Memories, CV Gate Input and Outputs, MIDI IN/OUT/THRU, and USB Connectvity.


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Discounted Price $799.00
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The HYDRASYNTH Desktop / Rack has the same great sound engine as the HYDRASYNTH Keyboard. The sound engine is a sound designers dream synth as well as a performing musicians ideal. The sound engine is designed for maximum flexibility. At the same time, we designed the user interface in a way to allow you to edit the patch quickly with a minimal amount of paging and many workflow shortcuts. Utilizing an advanced wavetable synthesis engine, 3 Oscillators, dual Wave Mutators and 2 filters that can be configured in series or parallel, the tone generating capabilities are unmatched. As for the performance capabilities, The Hydrasynth Desktop / Rack has 24 polyphonic pressure touch pads so that you can play the unit without needing to connect a keyboard or other controller. Using multiple pad layout modes as well as quick to access scale modes, the Hydrasynth Desktop / Rack is easy to make music on. The Hydrasynth Desktop / Rack comes with rack ears so that you can mount it in a standard 19" rack.

Poly Pressure Touch Pads
One problem with many desktop or rack synths is that you usually have to connect them to an external controller to play them. The idea behind having a rack or desktop unit you can put anywhere is that it is out of the way. This is fine until you want to start doing some sound editing or adjusting it in real-time. Then you want a way to play it. Ashun Sound Machines has included 24 polyphonic pressure sensitive pads that allow you to actually play the synth. With multiple pad layouts to choose from as well as multiple scales, playing the Hydrasynth Desktop is its own musical experience.

The tone generation capability is the heart of any synthesizer. The 3 oscillators allow you to choose from a selection of 219 single cycle waveforms. Wavemorphing is a feature usually found on synths with preset wavetables. Creating user wavetables is arduous or downright impossible. Unlike most wavetable synths, our oscillators 1 and 2 have Wavelist mode. This mode allows you to pick and choose 8 waves, from a bank of 219, arrange them in the order you want, and then morph from one to another.

The arpeggiator allows for standard note arpeggiations but also has a phrase arpeggio built-in. Parameters like RATCHET and CHANCE will generate other rhythmic patterns with some randomness to add life and spontaneity to your performance. You can also modulate most of the parameters in the arpeggiator so imagine using LFO', Envelopes, Polyphonic Aftertouch or the Ribbon controller to modify your arpeggios in real time.

Mixer/ filter routing
The 3 Oscillators are fed into a mixer along with the Noise generator and Ring Modulator. The Mixer allows you to mix levels as well as pan the input source. There is a balance control that allows you to choose how much signal of each source is routed to filters1 and 2. The filters can be set to be parallel or series for ultimate flexibility.

  • 8 Voice Advanced Wavetable synthesis

  • 2 Wavemorphing Oscillators
  • 219 single cycle waveforms
  • User wavetables - 8 user selectable 'wavelist' per osc to build user wavetables
  • Every osc and patch can have its own user wavetable
  • WaveScan parameter for modulating through wavetables.
  • Keytracking – 0-200%
  • +/- 3 octave tuning range

  • 1 fixed Wave OSC
  • 219 single cycle waveforms
  • +/- 3 octave tuning range
  • Keytracking – 0-200%

  • Dual Mutators per oscillator
  • FM – Linear FM
  • Selectable Modulator source
  • Built in Sine & Triangle, OSC1, OSC2, OSC3, Mutators A, B, C, D, Noise gen, Ring Mod, External Mod 1&2 input.
  • WaveStack – Generates 5 detuned waves from input source. Detune amount.
  • Pulse Width Mod – Adjust pulse width of ALL waveforms.
  • PWSqueeze – Compresses the center section of the waveform. Differnnt type of PWM
  • PW-ASM – 8 User adjustable wave squeeze/stretch points.
  • Hard Sync – gives that classic sync sweep sound.
  • Selectable Sync input source.
  • Harmonic Sweep – will scan through the harmonics of the incoming sound.
  • Dry/Wet mix to blend the original OSC source.

  • Noise Generator
  • White, Pink, Brown noise sources

  • Ring modulator
  • Selectable input sources
  • OSC1, OSC2, OSC3, Noise, All Mutator outputs, External Mod ½ in.
  • Depth control

  • Sound source mixer
  • Mix the following sources - OSC1, OSC2, OSC3, Noise, and Ring Mod.
  • Panning for each source
  • Filter routing mix
  • Solos for each source (solo status is saved in the patch)

  • Two Filters
  • Series or parallel routing
  • Filter 1
  • 12 & 24db modern ladder (compensated)
  • 12 & 24db vintage ladder (uncompensated)
  • Threeler HP, LP
  • MS20 HP, LP
  • Low Pass Gate
  • Vocal filter
  • Multiple vowel order parameter
  • Formant parameter
  • Filter 2
  • Continuously Variable Lowpass-Band pass-High pass (Oberheim SEM style)

  • Arpeggiator
  • Arp parameters can be modulation destinations.
  • Modes
  • Up, down, up/down, Up&down, random, note order, chord, pattern
  • Octave
  • Range, 1,2,3,4
  • Play order
  • Up, down, up/down
  • Swing
  • Gate time
  • Ratchet – repeats notes
  • Chance – sets how often the ratchet takes place.

  • 8x Macro knobs and buttons
  • Each macro knobs allows positive and negative of up to 8 destination controls

  • Matrix modulation
  • 32 slots for source-destination mod routings with amount
  • Modulation matrix slots can be mod destinations

  • 5x Envelope Generators
  • 6 stage DAHDSR envelopes
  • Delay, Attack, Hold, Decay, Sustain, Release
  • Slope curves for ADR stages
  • Variable from full exponential to full logarithmic
  • Tempo or Time option for setting length of each stage.
  • Looping of AHD stages for creating LFO types of modulations.
  • Trigger modes – Legato, Reset, Retrigger

  • 5x Low Frequency Oscillators
  • 10 static waves
  • Sine, triangle, Square, Saw up, Saw down, S&H, Low random, Noise, Pulse width 25%, Pulse Width 12.5%.
  • Step Wave – 8 steps that the user can set (like a step sequencer).
  • Step smoothing
  • Step glide
  • Clock sync
  • Starting phase
  • Start delay
  • Fade in
  • Master output gain
  • Trigger modes – mono, poly, free
  • One shot mode

  • Pre-effects – before Delay and Reverb
  • Chorus, Flanger, Rotary, Phaser, Lo-Fi, Tremolo, EQ, Compressor (with side chain)
  • Delay
  • Tape, Ping-pong, Analog, PitchShift, Reverse, Filter delay
  • Reverb
  • Hall, Room, Plate, Cloud
  • Post-effects – after Delay and Reverb
  • Chorus, Flanger, Rotary, Phaser, Lo-Fi, Tremolo, EQ, Compressor (with side chain)

Get your Ashun Sound Machines Hydrasynth Desktop Synthesizer today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Analog Synthresizer
  • Power Supply

So much fun to play and program


Great sound, great layout and so much fun to program. I am losing hours playing with wave morphing and the polyphonic after-touch.



I would buy again!


Awesome synthesizer!



Hydrasynth Desktop Synthesizer

5.0 2


Synth Type Analog
Synthesizer Format Synthesizer Module
Controller Types 24 velocity and pressure sensitive pads
Oscillators 2 Wavemorphing Oscillators
Wave Memory 5 banks of 128 patch memories
Effects Type
  • Pre-effects – before Delay and Reverb: Chorus, Flanger, Rotary, Phaser, Lo-Fi, Tremolo, EQ, Compressor (with side chain)
  • Delay: Tape, Ping-pong, Analog, PitchShift, Reverse, Filter delay
  • Reverb: Hall, Room, Plate, Cloud
  • Post-effects – after Delay and Reverb: Chorus, Flanger, Rotary, Phaser, Lo-Fi, Tremolo, EQ, Compressor (with side chain)
    Arpeggiator Yes
    Sampling No
    MIDI Sequencer No
    Audio Input Types 1 x 1/4" (Expression Pedal), 1 x 1/4" (Sustain Pedal)
    USB Yes
    Power Supply Type DC input jack
    Weight 7.94 lbs
    Dimensions 17.32 x 8.78 x 2.76 inches (LxWxH)
    Series Hydrasynth Series
    Model HSDFR
    Information not available

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