6-voice Analog Polysynth Module with 2 Oscillators and Sub Oscillator Per Voice, State-variable Filter, 64-step Polyphonic Step Sequencer, and Poly Chain Feature Pre-Orders Only OB-6 Desktop 6-Voice Polyphonic Analog Synthesizer Classic Oberheim Sound — Made Portable The OB-6® desktop module is just as powerful and easy to use as its counterpart, the OB-6 Keyboard. The 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. How does it sound? Massive — just like the keyboard, because on the inside, it’s exactly the same. The same analog signal path with discrete VCOs and VCFs. The same high-quality digital effects. The same classic Oberheim sound that has been earning raves from musicians around the world. We’ve also added a poly chain feature so that any two OB-6s can be paired for twelve-voice polyphony! Two Legends. One Instrument Both the OB-6 desktop module and OB-6 keyboard are a once-in-a-lifetime collaboration between the two most influential designers in poly synth history, Dave Smith and Tom Oberheim. 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. No other modern analog poly synth can boast such a pedigree or such a massive, in-your-face sonic signature. Vintage SEM Tone The OB-6 sound engine is inspired by Tom’s original SEM, the core of his acclaimed 4-voice and 8- voice synthesizers. It 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-analog signal path. Dual Effects The dual effects section provides studio-quality reverbs, delays (standard and BBD), chorus, flangers, and faithful recreations of Tom’s original phase shifter and ring modulator. While the effects themselves are digital, with 24-bit, 48 kHz resolution, a true bypass maintains a full analog signal path. X-Mod and Poly Step Sequencing Also present is X-Mod, which expands the tonal palette and makes it easy to create dramatic and unconventional sounds. Modulation sources are filter envelope and oscillator 2, both with bi-polar control. Destinations include oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, filter cutoff, and filter mode. The polyphonic step sequencer allows up to 64 steps and up to 6 notes per step. You can create sequences polyphonically, with rests, and sync to an external MIDI clock. The full-featured arpeggiator can be synced to external MIDI clock as well. Unison mode features configurable voice count (1-6 voices), chord memory, and key modes. Easy to Program The knob-per-function front panel puts virtually all OB-6 functions at your fingertips. Included are 500 permanent factory programs and 500 rewritable user programs. Turning on the Manual button enables live panel mode, in which the sound of the OB-6 switches to its current front panel settings. In this state, what you see is what you hear. Easy to Play This analog powerhouse is packed into a desktop module that’s small enough to fit in a backpack. It’s an ideal combination of portability and power for the project studio or the gigging musician. OB-6 Desktop Specifications OSCILLATORS Two discrete VCOs per voice Continuously variable wave shape (sawtooth and variable-width pulse, plus triangle on oscillator 2) 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 MIXER Oscillator 1 amount Oscillator 1 sub-octave amount Oscillator 2 amount White noise amount STATE-VARIABLE FILTER Two-pole, resonant, filter per voice with low-pass, high-pass, band-pass, and notch functionality inspired by the original Oberheim SEM filter Bi-polar filter envelope amount Velocity modulation of envelope amount Keyboard tracking: off, half, full FILTER ENVELOPE Four-stage (ADSR) envelope generator Velocity modulation of envelope amount AMPLIFIER ENVELOPE Four-stage (ADSR) envelope generator Velocity modulation of envelope amount LOW FREQUENCY OSCILLATOR Five wave shapes: sine, sawtooth, reverse sawtooth, square, and random (sample and hold) Clock sync (internal or external MIDI clock) Initial amount Mod destinations: oscillator 1 frequency, oscillator 2 frequency, oscillator 1 and 2 pulse width, filter cutoff, filter mode, amp X-MOD Sources: filter envelope (bi-polar) and oscillator 2 (bi-polar) Destinations: oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, filter cutoff, filter mode, normal to bandpass filter AFTERTOUCH Source: channel (mono) aftertouch with bi-polar amount Destinations: oscillator 1 frequency, oscillator 2 frequency, LFO amount, amplifier envelope amount, filter envelope amount, filter mode CLOCK Master clock with tap tempo BPM control and display MIDI clock sync ARPEGGIATOR Selectable note value: 16th note, 8th note triplet, 8th note, dotted 8th note, quarter note One, two, or three octave range Up, down, up/down, random, and assign modes SEQUENCER Polyphonic step sequencer with up to 64 steps and rests EFFECTS Stereo analog distortion Dual, 24-bit, 48 kHz digital effects, including: reverb (room, hall, plate, spring), delay (full bandwidth digital delay and emulated bucket brigade), chorus, flanger, phase shifters, and ring modulator Delay sync True bypass maintains fully analog signal path when digital effects are off PERFORMANCE CONTROLS Full-sized, semi-weighted, 4-octave keyboard with velocity and aftertouch Backlit pitch and mod wheels Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down) Transpose controls for an 8-octave range Hold switch latches held notes on Polyphonic portamento Unison (monophonic) mode with configurable voice count, from one to all six voices, chord memory, and key modes Manual switch: when on, the front panel is live; what you see is what you hear PATCH MEMORY 500 user and 500 factory programs in 10 banks of 100 programs each Direct program access, including single-button access to the current set of 10 programs IN/OUT Left/mono and right audio outputs (2 x 1/4” phone jack) Headphone output (stereo, 1/4” phone jack) MIDI in, out, and thru ports USB for bidirectional MIDI communication Filter cutoff expression pedal input Volume expression pedal input Sustain footswitch input Sequencer start/stop footswitch input POWER IEC AC power inlet for internal power supply Operates worldwide on voltages between 100 and 240 volts at 50 to 60 Hz; 30 watts maximum power consumption PHYSICAL SPECS 20.75” L x 7.8” W x 4.4″ H (52.0 cm x 19.8 cm x 11.2 cm) 13.0 lbs (5.9 kg) Walnut end panels
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