Dave Smith Instruments OB-6

Main features:

Oscillators

Two discrete VCOs for the voice

Continuously variable waveform - sawtooth pulse and variable width, plus triangle on oscillator 2)

Pulse width per oscillator

Possibility of hard sync; synchronizations of oscillator 1 for oscillator 2

Squave sub-octave wave generator (oscillator 1) for vocals

Low frequency mode (oscillator 2)

keyboard monitoring on / off (oscillator 2)

Oscillator detune quantities for increased tuning instability, ranging from delicate to extreme

Mixer

Amount of oscillator 1

Amount of oscillator 1 sub-octave

Amount of oscillator 2

Amount of white noise

Filter status variable

Two-pole, resonant, voice filter with low-pass, high-pass, band-pass and notch functionality inspired by the original Oberheim SEM filter

Quantity of bi-polar filter bag

Envelope quantity speed modulation

keyboard monitoring: off, half, full

Filter envelope

Four-stage envelope generator (ADSR)

Envelope quantity speed modulation

Amplifier envelope

Four-stage envelope generator (ADSR)

Envelope quantity speed modulation

Low frequency oscillator

Five wave shapes: sine, sawtooth, reverse sawtooth, square and random (sample and hold)

Clock synchronization (internal or external MIDI clock)

Initial amount

Mod destinations: Oscillator frequency 1, Oscillator frequency 2, Pulse width of oscillator 1 and 2, Filter cutoff, Filter mode, Amp

X-Mod

Sources: filter bag (bi-polar) and oscillator 2 (bi-polar)

Destinations: Oscillator 1 frequency, oscillator shape 1, oscillator 1 pulse width, filter cut, filter mode, normal to band pass filter

Aftertouch

Note value selectable: 16th note, 8th note triplet, 8th note, 8th note, quarter note

One, two or three octaves

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, 48kHz digital effects, including: reverb (chamber, hall, plate, spring), delay (full-bandwidth digital delay and emulated bucket brigade), chorus, flangers, phase shifters and ring modulator

Delay sync

True bypass keeps fully analog signal path when digital effects are turned off

Performance checks

Full, semi-weighted, 4-octave keyboard with velocity and aftertouch

Pitch wheels and backlit mod

Spring-loaded pitch wheel with selectable interval for each program (1 to 12 semitones up and down)

Transpose the controls over a range of 8 octaves

Hold switch hooks notes held

Polyphonic posture

(Monaural) mode in unison with configurable voice count, from one to all six voices, string memory and key mode

Manual switch: when, the front panel is live; what you see is what you hear

Patch memory

500 users and 500 factory programs in 10 banks of 100 programs each

Direct programming access, including single-key access to the current set of 10 programs

Entrance / exit

Left / mono and right audio outputs (2 x 1/4 '' jack)

Headphone output (stereo jack, 1/4 'phone)

MIDI in, out and thru ports

USB for bidirectional MIDI communication

Filter cutoff expression pedal input

Volume expression pedal input

Support footswitch input

Sequencer start / stop footswitch input