Alesis Andromeda A6

Alesis Andromeda A6 (Red) Image

The Andromeda A6 is a true analog synthesizer using two analog oscillators per voice, sub-oscillators, hard and soft sync and more! It features 16-voice polyphony. With the Andromeda, you'll find a huge range of tonal possibilities: searing leads, warm pads, fat bass lines, extreme sound effects and more. And of course there are plenty of knobs (72) and buttons (144), even an assignable ribbon controller for addictive hands-on real-time control! The large high-resolution LCD display is excellent and shows you actual rather than relative values of parameters. Andromeda will integrate seamlessly into any studio with its total MIDI control and sync, individual voice outputs, stereo outputs and several audio inputs.

Andromeda is completely analog - no emulation! It features two analog filters per voice that sound great! They are a multimode 2-pole and a 4-pole lowpass. External audio can be routed through these filters too (three 1/4" jacks)! As for modulation, Andromeda has three LFOs, each with six waveforms and they can be synced to MIDI clock. And there are three 7-stage envelopes with very creative and flexible functions. Also onboard is an extensive mod matrix for enormous freedom in configuring Andromeda's sounds!

Alesis Andromeda A6 (orig) Image

No analog synth would be complete without a set of classic effects and features. Andromeda also offers Portamento with nine slopes and legato functions. A built-in arpeggiator and analog-style sequencer are available, with MIDI sync! There are also some high quality digital effects such as reverbs, chorus, echo, distortion and more! Andromeda comes with 256 breathtaking preset patches plus 128 user. A PCMCIA-format memory card slot allows for additional programs and mixes. Andromeda is pure analog bliss, with all the features, stability and widgets of modern digital synths. It has been used by BT, Air, Duran Duran, Depeche Mode, Nine Inch Nails, DJ Tiesto, Klaus Schulze, Yes and the Pet Shop Boys.

Lookup Alesis Andromeda A6 Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

Related forum topics


Are you looking to buy or sell a Alesis Andromeda A6? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

125 Visitor comments
June 21, 2013 @ 10:59 pm
Selling a MINT condition A6. Original box, manual, foot pedal, and PC card with 5 banks of studio presets. Email me if you are interested:
Bron Telphas
June 3, 2013 @ 3:59 am
Overall, the Andromeda A6 is an absolutely stunning instrument. Absolutely beautiful sound. True analog oscillators, two different types of real analog filters available in various combinations, three fancy envelopes, three LFOs, S&H, and more than enough routing options. Velocity, aftertouch, ribbon, mod wheels, control-voltage inputs (!), footswitches, and full MIDI i/o give you tons of control.

I gravitate towards the Andromeda. It's my #1 go-to synth, nothing else I have now or had in the past (lots) comes close to Andromeda A6 for fulfilling polyphonic analog dreams.
Bron Telphas
June 3, 2013 @ 3:41 am
Build quality: A6 is housed in a metal enclosure, the end caps and keys being plastic. Mod wheels are rubber. Mine's five years old, and I've never once encountered a bug or a crash (perhaps I am lucky). The phono jacks are mounted directly to the metal casing (good) instead of "only" to the PCB (bad). Pots and buttons seem very good quality. My ONLY complaint, the custom oscillator and filter ICs will be impossible to replace if/when they ever die. I'd rather those sections had been made of mostly generic, discreet components, but that's asking way too much. This thing is already a beast.
Bron Telphas
June 3, 2013 @ 3:30 am
My Voyager and MS-20 are not directly comparable to A6, mono vs poly.

Given the similar patch settings, it is apparent that two or even four A6 oscillators are SLIGHTLY bested by three Voyager oscillators. This also holds for the filter (to the one of the two in the A6 that's more comparable).

A6 uses a single analog chip to make two oscillator voices, and a single analog chip to make two filter channels, while the Voyager boasts hundreds of discreet components to make its three oscillators and filter. (Now, imagine if the A6's 32 oscillators could have been built discreet.. too heavy.)
Bron Telphas
June 3, 2013 @ 3:21 am
I also own a DSI PolyEvolver, Moog Voyager Rack, Roland Juno-106, Korg MS-20. It's senseless to compare the A6, as they are each very different animals, each excels at something.

The DSI has a few digital oscillator tricks up its sleeves which enable a few tones not available in the A6 realm, namely that human-voice-like airy pad, due to the DSI's wavetable section. As for brute-force analog, shimmering pads, otherworldly strings, and rough crunchy bass, the A6 annihilates the DSI.

The A6 usually replaces my Juno, but Juno's think n swirly chorus is analog, besting A6's DSP chorus.
VSE Rating


User Rating

Rated 4.31 (1701 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 16 voices
  • Oscillators - 2 oscillators (with subs) per voice, 5 waveforms available (sine, triangle, square, up saw, down saw)
  • Filter - 32 total - 2-pole multimode resonating filter per voice, 4-pole lowpass resonating filter per voice
  • Effects - Digital reverb, chorus, echo, analog distortion, quad pitch-shifting, flange, and more
  • Arpeg/Seq - Arpeggiator: Up, Down, Up/Down, Random; Sequencer: 16-step, analog style; both have MIDI sync
  • Keyboard - 61 keys (velocity and aftertouch sensitive)
  • Memory - Program Memory: 256 preset and 128 user-defined
    Mix Memory: 128 user-defined
    Memory Card Slot: PCMCIA-format
  • Control - MIDI (16-parts)
  • Date Produced - Late 2000 - 2001
  • Resources & Credits
  • Images from

Errors or Corrections? Send them here.