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Alesis MICRON Analog Modeling Synthesizer

by Alesis
3.6 out of 5 stars 19 customer reviews

Available from these sellers.
  • Industry-leading Ion analog-modeling sound engine in a compact package
  • 8 voices, each with 3 oscillators, 2 multimode filters, 3 envelope generators, 2 LFOs, sample and hold, and tracking generator
  • 4 multi-timbral parts
  • Programmable step sequencer and arpeggiator
  • Dynamic real-time phrase sequencer
1 used from $449.99

Product Description

Product Description

The Alesis Micron, a new compact synth with the ION analog-modeling sound engine! The Alesis Micron is a powerful 8-voice Analog Modeling synthesizer based on the award-winning sound engine of the larger Alesis Ion in a compact 3. Buy Alesis Micron Analog Modeling Synth Keyboard now! Buy Alesis Micron Analog Modeling Synth Keyboard now!


Offering a virtually limitless sonic palette, the Alesis MICRON eight-voice analog-modeling synthesizer produces a big sound despite its small size. Whether you use a synth to accompany you on stage or in the studio or you prefer to work with the hundreds of preset Alesis sounds or create your own, the MICRON is a great musical companion.

The MICRON may be small in size, but it produces a big sound (see larger image).

It offers 8 voices, each with 3 oscillators, 2 multimode filters, 3 envelope generators, 2 LFOs, sample and hold, and tracking generator (see larger image).

The MICRON has two multi-mode filters, three envelope generators, and two LFOs: the full spectrum of synthesis components for shaping and creating sonorities and textures. For stage and studio-ready quality, the MICRON has 24-bit audio outputs and inputs via balanced connections.

Each of the MICRON's voices contains two filters, and each filter can be one of the following different types, each with its own character and sonic flavor: Bypass, Low Pass: ob 2-pole, tb 3-pole, mg 4-pole, rp 4-pole, jp 4-pole, al 8-pole; Band Pass: ob 2-pole, al 6-pole, octave dual, band limit; High Pass: ob 2-pole, op 4-pole; three Vocal Formants, four Comb Filters, Phase Warp, Frequency, Resonance, Key Tracking, Envelope Amount, Offset, and Absolute.

Key Features

  • Analog modeling synth engine
  • Eight voices, each with three oscillators
  • Up to eight multi-timbral parts with stereo effects
  • Two multimode filters, three envelope generators, two LFOs, sample and hold, tracking generator
  • Dynamic real-time and step sequencers, arpeggiator, and drum machine/rhythm sequencer
  • Stereo bus effects including reverbs and delays
  • 24-bit 1/4-inch balanced stereo analog outputs and inputs
  • 37-key synth-action keyboard with velocity sensitivity
  • More than 600 preset sounds


  • Synthesis: analog modeling (subtractive), noise generator, FM
  • Polyphony: up to 8 voices
  • Timbrality: up to 8 parts
  • Oscillators: 3 per voice with continuously variable waveshapes, sync, linear and exponential FM, Ring Mod, routable modulation matrix per voice.
  • Filters: 2 multi-mode resonating filters per voice with 16 filter types
  • Modulation: 2 LFOs with multiple wave shapes, sample and hold, tracking generator, freely routable modulation matrix per voice
  • Effects: 4 drive effects, 1 per part; master effects
  • Sequencing: step sequencer, arpeggiator, drum machine/rhythm sequencer, and phrase sequencer
  • Program memory: up to 1,000 programs and multi-timbral setups
  • Velocity sensitive: Yes
  • Keyboard: 37-key, synth action
  • External control: MIDI in/out/thru
  • Inputs: 2 balanced 1/4-inch TRS, mic
  • Outputs: 2 balanced 1/4-inch TRS, 1/4-inch TRS headphone
  • Pedal Inputs: Assignable expression pedal, sustain pedal

Product Details

  • Product Dimensions: 24 x 2.8 x 8 inches ; 14.3 pounds
  • Shipping Weight: 13.6 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B0002OJPE6
  • Item model number: MICRON
  • Average Customer Review: 3.6 out of 5 stars  See all reviews (19 customer reviews)
  • Amazon Best Sellers Rank: #73,555 in Musical Instruments (See Top 100 in Musical Instruments)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: October 2, 2001

Customer Reviews

Top Customer Reviews

I have been looking at analog modelling synthesizers since the illustrious Nord Lead blew the synth industry away. There have been many to follow, but I can honestly say the Alesis Micron gives you the most bang for the buck. There are more features on this little keyboard than I have seen on any other VA synth coming anywhere near the price.

500 patches of sounds (with room for 400 more to program) running the gamut of analog textures (don't believe some reviewers not finding soft and warm patches.. they are definitely there right out of the box) including sub-bass tones, warm strings, punchy basses, sweet analog drums and much more in between. The patches are separated by category (lead, bass, drums, pads, etc) and each category can be punched in on the fly.

You have three oscillators per voice (including variable waveshapes and FM) which gives the synth a really fat sound as well as two low frequency ocsillators for warmth. Doing quick modulation and filtering changes can be done with two programmable slider controls. There is also a pitch bend wheel that lights up when you use it. Programming can be pretty intuitive if you learn the shortcut method that makes the keys buttons to select parameters (essentially 37 extra buttons for editing).

I have compared the Micron with other VA synths like Korg's VA synths (MS2000, MicroKorg, Electribe), the Roland 303, the Novation Bass Station and can honestly tell you the Alesis Micron can go toe to toe against all of them and many times come out ahead in both sound and functionality.

The synth also includes a master dual effects processer and a single drive effects processor per patch (something most VA synths don't even include). Not the greatest effects processing in the world, but far from inferior.
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Comment 17 of 18 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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The Micron is a fantastic synth, more capable than its big brother Ion while sharing the same fantastic sound that the Ion is known for. Like all good VAs, the power of the Micron is in its hardware, not its presets. Romplers have good presets, but that's as far as you get-- No, the micron has weak presets but a strong core.

The UI, which takes a lot of flak from many reviewers, actually is very usable. It's shortcut based, so if you put a bit of time into learning it you find it's actually very quick and easy to use. Naturally having everything on the front panel, as does the Ion, would make editing operations significantly faster- but it's not at all bad.

If you're looking for honest analogue sound, the Micron is probably at the top of the list of VAs made right now. It's VERY analogue, and has an extremely impressive variety of filters.

Don't be scared off by the minimalist UI or some of the boring presets- The Micron is the Real Thing(tm) and can shake the walls.
Comment 8 of 8 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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This synth is loaded with a lot of great sounds - and it is very programmable. You can program your own beats, phrases, arpeggios and sounds. Layers, splits, assignable sliders. It can do a lot. In fact, for me personally, that's the only problem - it can do more than I can absorb. I know I'm not using it anywhere near it's capabilities. In researching this keyboard I found that most keyboard magazine and equipment reviews gave it high marks on sounds and programing, so I'm figuring that the difficulty lies with me and not the Micron. There will definitely be a learning curve if you're new to programming. The sounds and beats are very useable and inspiring, so overall I'm quite satisfied and happy with the keyboard.
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Well, I am reviewing this synth a few years after it was released, but that ought to give potential buyers a perspective about the synth from 2010 instead of 2006. The price hasn't changed much since I bought mine almost 5 years ago, so given inflation, you'd have to say it's a better value, but the real question is whether it can compete with all the stuff (soft synths included) that have come along since.

The sounds? Very nice, straight ahead synth sounds you can sonically sculpt extensively with a great assortment of filters and patch parameter settings. It has the same sound engine as the Alesis Ion which won raves for the analog sounding quality of it. And naturally the "virtual analog"-ish-ness of this keyboard also sounds really good. Not exactly analog, but close enough and professional enough to easily fill-in for recording and gigging.

This keyboard does a VERY decent job representing the "vintage" category. I'm not sure what decade the reviewer "Soggy Poodle" was referring to, but plenty of folks would consider synth sounds from late 70s and early 80's Rush and Styx "vintage". From that period, synths were still mostly analog, Yamaha's FM piano tones hadn't flooded the recording studios yet, and good ol' filter sweeps were still fashionable (ala "Tom Sawyer"). Could they have been a little more creative with the programming on this keyboard? Sure, but they did a decently representative job with what they did provide. The big selling point for me in programming the thing is the wide variety of filters available. You can really get some cool sounds (I really like the comb filters) but you have to be brave and creative enough to try something other than the LP filters to learn that.
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