Six voice analogue synthesizer with Dual Effects. Studio-quality reverbs, delays (standard and BBD), chorus, flangers, and faithful recreations of Tom’s original phase shifter and ring modulator.
Modulation; You can X-modulate a bunch of things from the envelope and oscillator 2.
Polyphonic Sequencer! 64 steps. 6 voice.
All this packed under four octaves of semi-weighted keys with velocity and channel aftertouch.
Features
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
* 31.8” L x 12.7” W x 4.6″ H (80.7 cm x 32.3 cm x 11.7 cm)
* 20 lbs (9.5 kg).
Walnut end panels
Video: https://youtu.be/0HzvXIMuO2Q?t=29
Product Specs
- Item Number: 15039
- Make: Sequential
- Model: Oberheim OB-6 Keyboard
- Condition: Brand New
- Finish: Black & Blue
- Categories: keyboards-and-synths ⇒ analog-synths
- Made In: United States
- MPN: DSI-2700
- UPC: 855346000753