Sequential OB-6 6-Voice Polyphonic Analog Synthesizer

The OB-6 from Dave Smith Instruments is a modern, all-analog 6-voice polyphonic synthesizer that pays tribute to Tom Oberheim’s SEM 4-voice and 8-voice synthesizers, but with several enhancements. The synth features true voltage-controlled oscillators, a classic Oberheim-inspired 2-pole, state-variable resonant filter, amplifiers, envelopes, and an LFO. Additional enhancements include studio-quality effects, a polyphonic step-sequencer, and an arpeggiator; all of which can be synchronized internally or via external MIDI clock.

The four-octave, semi-weighted keyboard offers velocity sensitivity and channel aftertouch, while the control panel offers knob-per-function control with no menu diving. There are 500 permanent factory programs and 500 user programs which are organized into 10 banks of 100 presets. The OB-6 offers an ideal combination of portability and power for the project studio or the gigging musician.

Two Legends. One Instrument
The OB-6 is a collaboration between Dave Smith and Tom Oberheim, two of the most influential designers in poly synth history. The OB-6 takes the classic bold Tom Oberheim sound, with its true voltage-controlled oscillators, 2-pole filter, and amplifiers, and adds modern enhancements such as studio-quality effects, a polyphonic step sequencer, an arpeggiator, and more
Vintage SEM Tone
Sound engine inspired by Tom Oberheim’s original SEM synthesizers
Two discrete voltage-controlled oscillators (plus sub-oscillator) per voice
Continuously Variable Waveshapes: Sawtooth and variable-width pulse, plus a triangle wave on oscillator 2
Classic Oberheim-inspired 2-pole, state-variable, resonant filter with low-pass, high-pass, band-pass, and notch functionality
VCA: Voltage-controlled amplifiers
Dual Effects
Dual Effect Engine: 24-bit/48 kHz resolution
Studio-quality reverbs, delays (standard and BBD), chorus, and phase shifter
True bypass maintains a full analog signal path
Independent stereo 100% analog distortion effect
X-Mod and Poly Step Sequencing
Modulation Sources: Filter envelope and oscillator 2 (both with bi-polar control)
Destinations: Oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, filter cutoff, and filter mode
Unison Mode: Configurable voice count (1-6 voices) and key modes
Polyphonic Step Sequencer: 64 steps with up to 6 notes per step with rests. Syncs to an external MIDI clock
Arpeggiator: Syncs to external MIDI clock
Easy to Program
Knob-per-function front panel offers instant access to virtually all OB-6 functions
1000 Presets: 500 permanent factory programs and 500 user programs organized into 10 banks of 100 programs
Live Panel Mode: Switches from a preset to current knob and switch settings
Easy to Play
Four-octave, semi-weighted keyboard with velocity and channel aftertouch
Programmable Backlit Pitch Wheel: 1 to 12 semitones
Backlit modulation wheel

In the Box
Sequential OB-6 6-Voice Polyphonic Analog Synthesizer
IEC Power Cord
1-Year Warranty