Dave Smith Instruments OB-6 6-voice Polyphonic Analog Synthesizer

A Synth Designed by Two Legends
What if two legendary synthesizer designers got together and built an analog polysynth using today's state-of-the-art technology? If you've just pinched yourself to see if you're dreaming, Sweetwater can assure you: you're not. Dave Smith Instruments OB-6 is a 6-voice, all-analog, 49-key synth inspired by Tom Oberheim's classic SEM circuits from the 1970s. Tom and Dave packed the OB-6 with everything on your wish list. With two voltage-controlled oscillators and sub oscillator per voice, a state-variable filter, 64-step polyphonic step sequencer, twin digital effects engines, and more, Dave Smith Instruments OB-6 delivers fat, punchy, in-your-face sonics that will power your music to new heights.

Dave Smith Instruments OB-6 at a Glance:


Synth dreams are made of this
Heart of the beast: Oberheim's classic SEM
X-Mod, Poly Step Sequencer, and Arpeggiator

Synth dreams are made of this
Now, finally, the artillery you need. Dave Smith Instruments OB-6 rocks six discrete analog voices with two oscillators and a sub oscillator per voice. Naturally, OB-6 is equipped with Dave's infamous X-mod (two sources, five destinations). On top of all that, there's a 64-step polyphonic step sequencer, two digital effects engines (with studio-grade reverbs, delays, chorus, flangers, and accurate re-creations of Mr. Oberheim's renowned ring mod and phase shifter), and an advanced arpeggiator. To control all this firepower, you have a knob-per-function top panel and a silky-smooth, semi-weighted, velocity- and aftertouch-enabled keyboard. From funk-laden basses and snarling, in-your-face leads to gloriously celestial pads, the OB-6 will make your synth dreams come true.
Heart of the beast: Oberheim's classic SEM
Oberheim's original SEM (Synthesizer Expansion Module) formed the core of Tom's renowned 4-Voice and 8-Voice synths of the 1970s. The SEM, in updated form, is also the core of the OB-6 analog sound engine. With two discrete voltage-controlled oscillators and a sub oscillator per voice, the OB-6 gives you the flexibility of waveshapes that are continuously variable between sawtooth and variable-width pulse. Oscillator 2 also sports a triangle wave. The classic Oberheim-style state-variable, 2-pole resonant filter features lowpass, highpass, bandpass, and notch functionality. The all-analog signal path is completed by the OB-6's voltage-controlled amplifiers.
X-Mod, Poly Step Sequencer, and Arpeggiator
The OB-6 is spec'd out with Dave Smith's brilliant X-Mod, which makes it easy to achieve killer sounds via modulation. The filter envelope and oscillator 2 are the sources, and they both give you bi-polar control. The five destinations are oscillator 1 frequency, oscillator 1 waveshape, oscillator 1 pulse-width, filter mode, and filter cutoff. The polyphonic step sequencer lets you program polyphonic sequences (up to 64 steps, up to six notes per step), complete with rests, and sync them to external MIDI clock. The full-function arpeggiator can also be synced to external MIDI clock. You can configure the OB-6's Unison Mode voice count for up to six voices; it also features a chord memory and key modes.
Dave Smith Instruments OB-6 Features:

2 oscillators and sub oscillator per voice
Continuously variable waveshapes
State-variable filter
64-step polyphonic step sequencer
Full-function arpeggiator
2 digital effects engines
Knob-per-function top panel
49-note semi-weighted, velocity- and aftertouch-enabled keybed

Dave Smith Instruments OB-6: this analog polysynth has it all!


Tech Specs



Sound Engine Type(s)
Analog


Number of Keys
49


Type of Keys
Semi-weighted with velocity and aftertouch


Other Controllers
Pitchbend, mod wheel


Polyphony
Polyphonic


Number of Presets
500 user, 500 factory programs


Effects Types
Analog distortion, reverbs, delay, chorus, flanger, phase, ring modulator


Sequencer
Polyphonic 64-step sequencer


USB
1 x USB Type B


Audio Outputs
2 x 1/4" (left, right), 1 x 1/4" (headphones)


MIDI I/O
In/Out/Thru/USB


Pedal Inputs
1 x volume expression, 1 x sustain, 1 x sequencer start/stop, 1 x filter cutoff expressoin


Height
4.6"


Width
32"


Depth
12.7"


Weight
20.9 lbs.


Manufacturer Part Number
DSI-2700






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