Oberheim Xpander

Oberheim Xpander Image

The Xpander is a six-voice desktop version of the Matrix 12 with which it shares an identical voice architecture. In many ways they are the most flexible non-modular analog synths ever built. Each voice has five LFOs, each with about five different wave shapes, plus the ability to sample most other modulators; five envelopes that can repeat themselves, sync to an LFO, and so on; a lag processor (like portamento, but more general); three tracking generators (that apply a series of linear functions to a value over its range); some ramp generators (the attack portion of an envelope); a 15-mode filter and a user interface to make all of this accessible.

Oberheim Xpander Image

Another very useful feature is its CV/gate to MIDI conversion capabilities for communication with older synths. There are six CV and Gate inputs which use standard 1V/8va CV and positive gating. So you can connect up to 6 external sources delivering CV/Gate and convert that into MIDI. Ample output options offer stereo and mono outputs as well as six additional individual audio outputs (1 for each voice) allowing you to use the Xpander as a stereo polyphonic 6-voice synth, as six individual monosynths or any combination in between. There's even a 3rd party Mod (Oddernmart mod) that allows for an external audio input that can be routed through the filter. And like The Matrix synths, the Xpander sounds wonderful, capable of thick analog basses, pads and textures. It is used by Cirrus, Josh Wink, Astral Projection, Vince Clarke, DJ Sasha, Chemical Brothers, Meat Beat Manifesto and Nine Inch Nails.

Lookup Oberheim Xpander 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.

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Are you looking to buy or sell a Oberheim Xpander? 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.

33 Visitor comments
August 14, 2014 @ 7:01 pm
Dan -- what's an email address you can be reached at? Would be interested to discuss regarding your many vintage polysynths -- do you have a Jupiter 8 by chance?

Look forward to hearing about your gear list.
Dan Marcus
August 9, 2014 @ 11:47 am
I have an Xpander that I bought decades ago and have hardly used - it's been tucked safely away in a closet for years. Worked fine, last time I played with it, but I freely admit I've never fully explored its capabilities. It's time for it to go to someone who will actually use it. For what it's worth, I'm in Seattle - email me with a reasonable (market-based) offer, and we'll give the ol' beast a new home. I have quite a few other vintage devices as well - it's a long story...
July 24, 2014 @ 2:08 am
Really really impressive sounds, comparing to Matrix6/1000 which are also good. This thing is so expressive and sounds just so much more alive makes me smile.
September 27, 2013 @ 2:06 am
Check out an eBay seller called "awakewalk" from Japan - he sells constantly some amazing vintage synths refurbished, like several Jupiter-8's (!), a DX1, and currently also an Xpander. The prices are high.
September 15, 2013 @ 3:51 pm
I want one bad but don't know what a reasonable price. Looking around there's a synth by mutable intruments called the 4pm - they make a deep mono synth using the oberheim core with 18 available filter types. In their analog poly 6voice you can choice between 4 different filters to mix and match - one being the lpf from the 4pm. Roth a look
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User Rating

Rated 4.13 (334 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 - 6 voices
  • Oscillators - 12 VCOs (2 per voice), Linear FM
  • LFO - 5 LFO's
  • Filter - 1, 2, 3, 4 pole low pass; 1, 2, 3 pole hi pass, bandpass, notch, phase shift
  • VCA - 15 per voice, 5 ADSR envelope gens per voice
  • Keyboard - None
  • Memory - 100 single / 100 multi
  • Control - MIDI In/Out/Thru, 6 CV/Gate Inputs, Trigger, 2 pedal inputs
  • Date Produced - 1984-88
  • Resources & Credits
  • Images from
    and Tone Tweakers.

    Thanks to Jimmy and DAC Crowell for providing this information.

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