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Ashun Sound Machines

ASM Hydrasynth Keyboard 49 Key Synthesizer

  • Based on 30 reviews
Condition: New
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Availability: Only 4 left in stock, order soon!
Fulfilled by Alto Music
Arrives Friday, Oct 23
Order within 8 hours and 26 minutes
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Features

  • 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
  • Utilizes an advanced wavetable synthesis engine, 3 Oscillators, dual Wave Mutators and 2 filters that can be configured in series or parallel
  • Features a proprietary Polytouch keybed that offers polyphonic aftertouch over each note
  • Includes a 4 octave ribbon controller and ergonomically designed pitch and mod wheels

Description

The HYDRASYNTH keyboard is both 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 keyboard has our proprietary 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.

Brand: Ashun Sound Machines


Color: Black,white,silver,red


Number of Keys: 49


Skill Level: Advanced


Size: 22 x 38 x 9 inches


Number of Keys: 49


Skill Level: Advanced


Connector Type: USB Type B


Connectivity Technology: USB


Size: 22 x 38 x 9 inches


Item Weight: 14.7 kg


Item Dimensions: 38 x 22 x 9 inches


Color: Black,white,silver,red


Finish Type: Brushed


Style: Modern


Sound Profile: Versatile


Brand Name: Ashun Sound Machines


Age Range Description: Adult


Model Name: Hydrasynth


Model Number: HSKB


Instrument: Synthesizer


Unit Count: 1 Count


Number of Items: 1


Manufacturer: ASM


Manufacturer Part Number: HSKB


Set Name: 49


Warranty Description: 2 years.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Professional build and the keys sensitivity and after touch
Still a lot to learn but built great, looks great, sounds great and is a lot of fun straight out of the box.
Reviewed in the United States on November 8, 2025 by robert
    • This is not an ordinary synthesizer, the poly aftertouch is great. This is more like an MPE synth
I am a bit of a synthesizer collector. I have over a dozen ranging from Yamaha DX7's, Roland JX-8P, D-50's, Yamaha EX5's, all the way to modern synths like Prophet Rev2, Korg Prologue, Korg Kronos, etc. Out of all of them, the Hydrasynth brings something to the table that is unique, and makes it a superior instrument in many ways. The polyphonic aftertouch. You don't use it like normal aftertouch, where you might use it to add vibrato or change a filter. You use it more like you would an MPE midi keyboard, where you play melodies just by varying the pressure of your individual fingers as you hold a chord. You can press a chord with both hands, not let go, and just by lightly increasing the pressure of your individual fingers, play a melody over the chord, without ever lifting a finger. It's like having 4 hands. The level of expression you can play, will make every performance, every solo, every note you play feel like it has the freedom of singing, or the nuance of a good saxophone solo. It makes a synthesizer less like a piano, and more like a guitar or a woodwind, where you can put so much expression into your playing that it almost speaks. Since I got the hydrasynth my other keyboards sit un-used. I wish it had a larger keyboard available, but it's otherwise nearly perfect. The build quality is all metal, solid as a rock. The user interface took some getting used to but now I'm fast and confident changing parameters in real time. The touch strip is another great touch for expression, You can use it like a pitch wheel, or like a theramin. IE you can use it to drone a note that changes pitch as you move your finger, even with no keys pressed. Sound wise, you would never know this is a digital synth. It sounds more analog than my Prologue. And unlike many of the analog and virtual analog synths out there, it's not trying to replicate vintage instruments (although its' good at that as well), it's actually surpassing them and showing what subtractive and additive synthesis might sound like if we stop living in the past, and try to make a future. ... show more
Reviewed in the United States on March 21, 2021 by Kodie
    • Amazing tonal options and really fun playability - no brainer for the price
This thing is rad. I’m sitting here next to a Virus TI, Moog One, and a ton of plugins so suffice it to say, I think my opinion is at least moderately well informed. What’s really amazing about this synth as mentioned in another review is the aftertouch. It’s almost as if the that is the really unique part about this instrument. The sounds it comes with are OK, but the playability and modulation capabilities are phenomenal. It’s definitely a nerdy synth. Something that you will need to be ok diving through menus to get where you want to be, but it’s all there and more. Like I said the options are pretty stunning. For the price it’s an absolute no brainer. ... show more
Reviewed in the United States on June 30, 2021 by Joe
    • Reading and understanding the manual.
Review Image by Charles Ewing Charles Ewing
This is an incredible synth! Still only sratched the surface of it.
Reviewed in the United States on April 2, 2025 by Charles Ewing Charles Ewing
    • A stunner! Tactile response to the keyboard is excelent. Range of sounds is impressive.
Really quite good!!! Wasn't sure what I would get, but initial response is quite good.
Reviewed in the United States on March 29, 2023 by Caleb Weissberg
    • EXTRAORDINARY - AFTER the upgrade tho
Review Image by Lucas Lucas
Review Image by Lucas Lucas
Review Image by Lucas Lucas
Amazing synth after upgrading to the latest Ultimate Patches - a MIND-BLOWING synth and VERY flexible features (5 envs / 5 lfos etc). WOW!
Reviewed in the United States on February 1, 2023 by Lucas Lucas
    • Mind Blown
Too rad for words, beyond impressed.
Reviewed in the United States on August 4, 2021 by No Name
    • Awesome in every way
I'm a big Korg fan but this keyboard goes above and beyond. The sounds are strong, deep, unique. The after touch feature adds so much more expression.
Reviewed in the United States on December 21, 2021 by Brian Giarraffa

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