Sequential Oberheim OB-6 Module
Sequential Oberheim OB-6 Module
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Sequential Oberheim OB-6 Module

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The Sequesntial Oberheim OB-6 desktop module has all of the same controls as the keyboard version and provides the same immediacy and ease of use.
As with the OB-6 Keyboard, all parameters are at your fingertips, with full-sized knobs and switches and a comfortable, intuitive layout.

The OB-6 sound engine features two discrete voltage-controlled oscillators (plus sub-oscillator) per voice with continuously variable waveshapes (sawtooth and variable-width pulse, plus a triangle wave on oscillator 2). The classic Oberheim-inspired 2-pole, state-variable, resonant filter provides low-pass, high-pass, band-pass, and notch functionality. Voltage-controlled amplifiers complete the all-analogue signal path.


  • Two discrete VCOs per voice
  • Continuously variable wave shape per oscillator
  • Pulse width per oscillator
  • Hard sync: oscillator 1 syncs to oscillator 2
  • Square wave sub-octave generator (oscillator 1) per voice
  • Low frequency mode (oscillator 2)
  • Keyboard tracking on/off (oscillator 2)
  • Oscillator detune amount for increased tuning instability, from subtle to extreme
  • Two-pole, resonant, filter per voice with low-pass, high-pass, band-pass, and notch
  • Seperate four-stage (ADSR) envelope generator for Amp and Filter
  • LFO; Five wave shapes: sine, sawtooth, reverse sawtooth, square, and random (sample and hold)
  • Mod destinations: osc 1 frequency, osc 2 frequency, osc 1 and 2 pulse width, filter cutoff, filter mode, amp
  • Cross Modulation
  • Arp: Up, down, up/down, random, and assign modes. one, two, or three octave range
  • Polyphonic step sequencer up to 64 steps and rests
  • Stereo analog distortion
  • Dual, 24-bit, 48 kHz digital effects
  • Unison (monophonic) mode with configurable voice count
  • Manual switch: when on, the front panel is live; what you see is what you hear
  • 500 user and 500 factory programs in 10 banks of 100 programs each
  • Left/mono and right audio outputs (2 x 1/4” phone jack)
  • MIDI in, out, and thru ports
  • USB for bidirectional MIDI communication


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