Alesis ION Analog Modeling DSP Synthesizer  

Product #702220

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This product has been discontinued but may be available as a Open Box item.

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A muscular DSP engine, cutting-edge synthesis technology, and fabulous sounds in a high-performance analog modeling synth.

Sounds from a dream team of the world's best sound designers and amazing sonic versatility are well represented in the 49-key Alesis ION Analog Modeling DSP Synthesizer. It comes with more than 500 presets, all of which can be used for user patch storage.

Each voice has three oscillators with continuously variable wave-shapes, multiple flavors of FM, and oscillator sync. 16 filter types, any two of which can be used simultaneously in series, parallel, or stereo configurations. Import external signals through balanced 24-bit analog inputs and run through the ION's filters, effects, and 40-band vocoder.

Revolutionary ergonomic user interface is designed to be grabbed, tweaked, and played. Thirty infinitely adjustable control knobs on high-resolution pots, not encoders. Large 160x160 graphic LCD presents a simple and intuitive navigation system.

With 49 velocity-sensitive keys, pitch bend wheel, two mod wheels, and inputs for assignable sustain and expression pedals. Sturdy all-metal chassis and internal switching power supply.


  • 512 preset programs, all user rewritable
  • 4 parts multitimbral
  • 8-voice polyphony
  • Powerful, 500 mips dsp sound engine
  • 3 oscillators with continuously variable wave shapes
  • Linear and exponential oscillator FM
  • 16 filter types
  • 2 filters available simultaneously
  • 3 ADSR envelopes
  • 2 IFOs with multiple waveforms available simultaneously
  • Arpeggiator, syncable to MIDI clock
  • Ultrafast modulation matrix
  • 4 mono/stereo insert effects available simultaneously
  • Stereo master multi-FX processor
  • Full-featured 40 band vocoder
  • 30-360° high-resolution parameter knobs
  • High-resolution graphic LCD
  • 49 velocity-sensitive keys
  • One pitch and 2 modulation wheels
  • Balanced, stereo analog inputs
  • 4 balanced, analog outputs
  • 24-bit A/D/A converters
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(based on 2 reviews)

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(46 of 85 customers found this review helpful)


Great sounding VA loaded with lots of features


from Austria

Until the release of the OS Version 1.5 my ION suffered from spontaneous self-editing (very seldom) but with OS 1.5 this problem was solved on my ION. The problem is that the rotary encoders are too sensitive (12 Bit resolution) but on the other hand it allows very decent filter sweeps and modulations without "jumps". Sound: PRO: Great thick spicy warm gentle. A great approach to the old analog Synthesizers (hello 80's). Also very good for modern trance, dance. CON: Only 8 voices.Production quality: solid.

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(63 of 113 customers found this review helpful)




from Chicago

I just got this, and this thing is SO COOL! I have not even begun to explore all of the sounds that this synth has in it, because I pull up a cool sound, start tweaking the mod wheels (there are two of them and they LIGHT UP when you move them!), and then I start turning the filter knobs (I don't really know what I'm doing, but it sounds cool!), and before you know it, I have spent 15 minutes messing around with ONE sound! The arpeggiator is cool too.It adds a lot to the sounds. I have only had this about a week, and it will probably take me a month to really explore all of what this machine can do. Oh, and I also put some drum loops into the ION (via the external audio inputs), and WOW! I made some REALLY wild drum loop sounds and then I put those back in my computer and used them with the original loops. It sounds REALLY wild, and best of all it, sounds like nothing I have ever heard before. In fact, a lot of the sounds in this machine are really original sounding, so when I use them in my songs, people say "what IS that? That's cool!". The only thing that I am not in love with is the keyboard. I would prefer more keys, and it feels a LITTLE spongy, but that is just nit picking. This thing is great, plus it is not expensive.

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