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ASM Hydrasynth Explorer 37-Key Digital Polyphonic Synthesizer

ASM Hydrasynth Explorer 37-Key Digital Polyphonic Synthesizer

£485
16/100 deal score

Above market: £485 is 31% above the £371 median of 24 used ASM HydraSynth Explorer listings seen in the last 90 days (typical range £337–£427).

MintReverb21h agoLocal pickup available

Sold by

C

Chicago Music Exchange

View on Reverb

Details

First Seen
25 October 2026
Last Seen
25 October 2026
Times Seen
2

About this listing

ASM Hydrasynth Explorer 37-Key Digital Polyphonic Synthesizer is a used item in mint condition, listed on Reverb. The asking price is £485. It is offered by Chicago Music Exchange through Reverb. Local pickup is available. It is in our Synthesizers category. 24 similar listings have a median asking price of £371. Used Gear Hunter first saw this listing on 25 October 2026. It has been seen 2 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

From the seller

This item is in excellent working condition and barely used. Please Note: This item is covered by a 2 year limited factory warranty. This warranty is also retroactive, for any customer that purchased a new ASM Hydrasynth 2 from CME. The ASM warranty does not include “b-stock”, “demo”, “open box”, or any other designation that limits the term “new”. The customer needs to provide the original receipt to us, as per usual, and the ASM warranty is non-transferrable. The HYDRASYNTH EXPLORER is the ultimate in power and portability, offering the powerful Hydrasynth sound engine together with battery powered operation and a new ASM PolyTouch polyphonic aftertouch mid-sized keybed. The greatest attention has been put to its user interface, making sound creation a breeze. This is the ultimate companion for a portable setup, where a smaller footprint in needed. 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 EXPLORER has our proprietary 37-note mid-sized Polytouch keybed that offers polyphonic aftertouch over each note, giving you the type of expressive control found only in certain vintage synths. 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. Portability The HYDRASYNTH EXPLORER can be powered by it's included power supply or by 8 x AA batteries, not included. The expected life for battery operation is around 3-4 hours depending on type, make, and model. Oscillators 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 & 2 have our WAVELIST mode. This mode allows you to pick and choose 8 waves, from our bank of 219, arrange them in the order you want, and then morph from one to another. Mutators 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: FM-Linear - for making classic FM sounds. Choose multiple FM sources, including external inputs. Wavestack - creates 5 copies of the incoming sound and allows you to set a detune amount. Hard Sync - This gives you those classic hard sync sounds. Try hard syncing a morphing wavetable for some fun. Pulse Width - This will pulse width modulate ANY input sound. PW - Squeeze - This is a different form of pulse width mod that creates a smoother sound. PW-ASM - this mode divides the incoming wave into 8 slices and allows you to set how much pulse width mod will happen in each section. Harmonic Sweep - this will sweep the harmonics of the incoming sound. PhazDiff - this takes the input signal, shifts the phase and then creates a difference result with the original signal The Mutants 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. 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. Filters If oscillators and tone generators are the heart of a synthesizer, the filters are the soul. The Hydrasynth has two filters that can be configured in series or parallel. The first filter has 16 different filter models, giving you multiple options for tailoring your sound. The second filter is a 12db per octave has a continuous sweep from either low pass > bandpass >high pass or low pass > notch > high pass, similar to the way the classic SEM filter worked. LFO's 5 Low-Frequency Oscillators…YES, 5. Much like our sound engine, the LFO’s are not ordinary by any means. The Hydrasynth LFO’s feature a STEP mode that allows you to create patterns with up to 64 steps. Having 5 mini step sequencers gives you an amazing amount of possibilities for further shaping your sound. Of course, there are also 10 standard…