Oberheim OB-Xk

Oberheim OB-Xk Image

The Oberheim OB-Xk is a MIDI keyboard controller from the mid-eighties. Originally designed to control the Matrix and Xpander modules, it uses MIDI and works fine as a controller for any MIDI gear. It's got 61 keys that respond to velocity and aftertouch, two OB-style Pitch/Mod controllers, and one assignable continuous control slider. From the front panel you can directly access the first 100 single patches and/or 100 multi patches of your MIDI module. Any additional patches must be selected by another MIDI controller.

Other features include the ability to transpose up or down by up to 2 octaves or by half steps. The keyboard can be split into 3 zones. There are basic Hold and Chord memory functions and an Arpeggiator section with pretty decent features (it can use internal or external clock). The OB-Xk can also send a sequencer Song Select, Start and Stop commands. It's built with Oberheim's classic & vintage look: solid black metal case with wood end-cheeks. Definitely a unique controller to have around, although severely limited by today's standards.

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18 Visitor comments
J.D. Haight
March 11, 2010 @ 9:48 pm
I do love mine, and not a single OB in the rack.
The MIDIGuru
September 27, 2009 @ 10:01 pm
This one is special. You have 100 programs. Transmitting on three independant MIDI channels Three keyboard zones, and a first class arpeggiator. "severely limited by today's standards??? - very few controllers can do what this one can do. "This should be used only for Oberheim systems"??????? I cannot think of a module that this controller cannot fully control.
January 15, 2009 @ 7:13 pm
One of the best controllers I have ever tried and seen. Much earier to use than Yamaha K-88. This should be used only for Oberheim systems. I tried both of them.
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User Rating

Rated 3.38 (94 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 - n/a
  • Oscillators - n/a
  • Effects - n/a
  • Filter - n/a
  • Arpeg/Seq - Arpeggiator with internal/external clock sources
  • Keyboard - 61 keys (velocity, after-touch)
  • Memory - 100 single patches, 100 multi patches, 3 zones
  • Control - MIDI Out (1 channel at a time)
  • Date Produced - 1986
  • Resources & Credits
  • Images from Synth Site

    Thanks to Scott Marcotte for providing information.

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