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ASM Hydrasynth Polyphonic Wave Morphing Desktop Synthesizer

  • Our Price
  • Regular price $799.00


An Expression Powerhouse For Sound Designers and Musicians Alike - The ASM Hydrasynth 8-Voice Digital Wave Morphing Desktop/Rack Synthesizer

The HYDRASYNTH Desktop/Rack has the same great sound engine as the HYDRASYNTH Keyboard. The sound engine is a sound designer's 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.


Sound Path

  • 8 Voice Advanced Wavetable synthesis
  • 2 Wavemorphing Oscillators
    • 219 single cycle waveforms
    • User wavetables - 8 user selectable "wavelists" 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 and Triangle, OSC1, OSC2, OSC3, Mutators A, B, C, D, Noise gen, Ring Mod, External Mod 1and2 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. Different 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 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 and 24db modern ladder (compensated)
    • 12 and 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)


  • 5x Low Frequency Oscillators
    • 10 static waves - Sine, triangle, Square, Saw up, Saw down, S and 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
  • 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
  • Matrix modulation
    • 32 slots for source-destination mod routings with amount
    • Modulation matrix slots can be mod destinations
  • 8x Macro knobs and buttons - Each macro knobs allows positive and negative of up to 8 destination controls
  • Arpeggiator
    • Arp parameters can be modulation destinations.
    • Modes - Up, down, up/down, up and 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

Effect Specifications

  • 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)

Physical Specifications

  • Metal Chassis
    • Steel top and bottom
    • Aluminum side panels
    • 5U in rack
  • 24 PolyTouch pads - velocity and pressure-sensitive
  • 5 banks of 128 patch memories
  • CV gate input and outputs - Supports multiple CV/GATE standards
  • CV
    • 1v per octave +/-5V
    • 1V per octave 0-10V
    • Hz to Volts +/-5V
    • Hz to Volts 0-10V
  • 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
    • Clock Voltage - 3v, 5V, 10V
    • Voice overflow mode for expanding voices with another Hydro synth
  • Expression pedal input
  • Sustain pedal input - Polarity sensing input
  • DC input jack
  • USB port - Supports USB MIDI In/Out
  • Dimensions: 44 x 22.3 x 7 cm (17.32 x 8.78 x 2.76 inches)
  • Weight: 3.6kg (7.94 lbs)

Manufacturer: asm
Model: HSDR
Warranty: See manufacturer website for details
SKU: I627851-8-B