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Alesis ION Analog Modeling DSP Synthesizer  

Product #702220

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Item Note:

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

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Best virtual analog synth?

49-Key 1K DSP Synthesizer
The ION is also noteworthy in its clean, intuitive user interface, comprised of 30 realtime control knobs, over 70 direct-access buttons, a pitch bend wheel, and two assignable modulation wheels. Using this interface, everything from radical filter sweeps to subtle tonal changes can be performed in real-time, just like the classic analog synths of the past. Additionally, a 160x160 graphic LCD provides feedback throughout a variety of operations. The ION's onboard effects include chorus, flange, phaser, echo, distortion, fuzz, compressor and more--all developed using Alesis' legendary effects algorithms. Of particular note is the ION's full-featured Vocoder, which can perform up to 40 bands of vocoding with no negative impact on the ION's polyphony.


  • 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
  • Internal universal power supply
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by PowerReviews

(based on 2 reviews)

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Reviewed by 2 customers

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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.

(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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