ASM Hydrasynth Keyboard

Keyboard version


This is an exciting new digital synthesizer from a new company, Ashun Sound Machines. The VP of product development, Glen Darcey, was behind most hardware synths from Arturia (as well as some of their soft synths) and a lot of Akai hardware. Expect to see an explosion of online interest in this would be my prediction. Kudos to the ASM marketing team, this synth blasted on the scene with many major YouTube reviews and preordering live on announcement day. Hydrasynth is expected to be shipping in November 2019. A refreshing change from the Behringer way of torturing buyers for years in some cases…

Most information about the Hydrasynth keyboard version applies to the Hydrasynth desktop version, with of course the real estate changes taken into consideration. Important to note that the keyboard version and its 8 voices will work together with the Hydrasynth desktop version and its 8 voices for a total of 16 voices in voice overflow mode.

I like this synth. Of all the synths announced recently, this is the one that catches my interest. Right off the bat, I think most people need to understand the ASM Hydrasynth is not a Waldorf Quantum. For starters, the Waldorf is a hybrid and the Hydrasynth is a pure digital synth. The two synths are just not the same, even if they share some features. They both have unique features as well. However, if you can’t squeeze a Quantum into your budget, consider getting a Hydrasynth would be my advice.

Specific to keyboard version

  • Larger and heavier, controls slightly larger with more space between them
  • 49 Key full size velocity sensitive with polyphonic aftertouch keyboard
  • Pitch and Mod wheels
  • Ribbon controller full length
  • 5 Filter controls
  • 8 Arpeggiator controls
  • Glide and chord mode
  • Octave up & down buttons
  • 1/4″ and 1/8″ headphone output plus headphone volume

All other functions are the same essentially.


Manufacturer’s website

Product support, downloads

Facebook Page

Facebook user groups

ASM Hydrasynth Group


(Uptown Oscillators) UO ASM Hydrasynth YouTube Playlist

Useful links

Trying to make sense out of all the wave* variant synthesizers out there today in 2020? Read the Uptown Oscillators Wavetable Synth Comparisons.

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Last edited – 1/10/2020
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Manufacturer Specifications: click to open/close or jump to comments

  • Type: Keyboard Synth
  • Sound Engine Type(s): Wave Morphing Synthesis (wavetable, linear FM, wave PWM, subtractive)
  • Analog/Digital: Digital
  • Number of Keys: 49
  • Type of Keys: Synth, Full-size
  • Aftertouch: Polyphonic Aftertouch
  • Other Controllers: Pitchbend, Mod wheel, Multi-function Ribbon Strip
  • Polyphony: 8 Notes
  • Presets: 640 Program Locations (5 banks x 128 Patch Memories)
  • Oscillators: 3 x Wavescan Oscillators (219 waveforms), 4 x Mutators Wave Shapers
  • LFO: 5 x LFO, Tempo syncable
  • Filter: 1 x Multimode Filter (11 types), 1 x Variable Filter (lowpass, bandpass, highpass)
  • Envelope Generator: 5 x ADSR ; Delay, Hold, Looping
  • Effects Types: 4 x Reverbs, 5 x Delay, Chorus, Flanger, Rotary, Phaser, Lo-Fi, Tremolo, EQ, Compressor
  • Arpeggiator: 8 x Arpeggiators
  • Audio Outputs: 2 x 1/4″ (L/mono, R)
  • Headphones: 1 x 1/4″, 1 x 1/8″
  • USB: 1 x Type B
  • MIDI I/O: In/Out/Thru/USB
  • Pedal Inputs: 1 x 1/4″ (sustain), 1 x 1/4″ (expression)
  • Other I/O: 2 x Mod in, Pitch out, Gate out, 2 x Mod out, Clock out
  • Power Supply: 12V DC power supply (included)
  • Height: 4.53″
  • Width: 31.50″
  • Depth: 13.63″