The all-analog-signal path, classic OB-X8 is now a desktop module. It’s a perfect synth: OB-X, OB-Xa, and OB-8 in one instrument, with all the Page 2 extras, and the sounds that made 1999 by Prince, among others.

There’s not much more to say about the OB-X8 desktop. Take one of the best synths currently on the market, and make it accessible to more folks with a walnut-cheeked desktop case. Sounds pretty good to me. That fits in 4.34 kg (9 lb, 9 oz) and 55.88 x 21.59 x 10.16 cm.



  • 8-voice pure-analog polyphony  
  • Two discrete OB-X/SEM-lineage VCOs per voice deliver classic punchy Oberheim tone  
  • Discrete SEM-lineage VCFs deliver authentic OB-X-style tone and presence  
  • Genuine Curtis filters add bold OB-Xa/OB-8 character  
  • Meticulously modeled envelope responses match each OB model: OB-X, Ob-Xa, and OB-8  
  • Bi-timbral capability allows two presets simultaneously for splits and doubles  
  • 400-plus factory programs, including the full set of factory sounds for the OB-X, OB-SX, Ob-Xa, and OB-8  
  • Integral fan-less, heatsink-free power supply  
  • Real walnut end cheeks  
  • High-resolution OLED display enables patch management and easy access to advanced features  


  • Additional SEM filter modes add high-pass, band-pass, and notch functions to the classic OB-X filter  
  • Vintage knob allows variable amounts of voice-to-voice variability to emulate the behavior of vintage instruments   
  • Velocity response adds expressiveness to volume and filter   
  • Channel Aftertouch response adds real-time performance-based modulation  
  • Enhanced unison allows variable voice stacking from 1-8 voices  
  • Programmable per-voice pan allows wider stereo presence  
  • Variable oscillator and noise levels  
  • Variable triangle wave cross-modulation  
  • Over 600 user-programmable preset locations  

Ins & Outs  

  • L/R Stereo and Mono outputs  
  • Volume, Sustain, and Filter pedal inputs  
  • Arpeggiator clock input  
  • MIDI In, Out, Thru  
  • USB

The OB-X8 is available from Sweetwater:

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OberheimĀ OB-X8 8-voice Polyphonic Analog Desktop Synthesizer Module

OberheimĀ OB-X8 8-voice Polyphonic Analog Synthesizer

We’ve covered the full-sized unit with keyboard plenty – so let’s review, especially now that we get another edition of this modern classic: