Detail 01
Oscillators
Each voice has two discrete voltage-controlled oscillators plus a square-wave sub-oscillator from oscillator 1.
Product detailSKU #1500000005624
OberheimOB-6 6-Voice Polyphonic Analog Synthesizer
modernelectronicpop
1/8
Independent shopping perspective
The Korena take
A hands-on 49-key, six-voice analog poly synth pairing discrete VCOs and a SEM-inspired state-variable filter with sequencing, arpeggiation, and digital effects.
Strong match
Who this is for
- Players seeking a six-voice fully analog synth with a 49-key semi-weighted keyboard
- Sound design using variable oscillator shapes, state-variable filtering, and X-Mod
- Performers using velocity, channel aftertouch, live panel mode, sequencing, or arpeggiation
- Studio or stage setups needing MIDI, USB MIDI, pedal inputs, and stereo outputs
Consider the trade-offs
When to look elsewhere
- Players who need more than six voices
- Players seeking a keyboard other than 49 semi-weighted keys
- Buyers who require effects other than the listed onboard types
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Filter modes
The two-pole state-variable resonant filter offers low-pass, high-pass, band-pass, and notch operation.
Detail 03
X-Mod
The filter envelope or oscillator 2 can modulate oscillator 1 frequency, shape, pulse width, and filter cutoff or mode.
Detail 04
Program memory
There are 500 factory programs and 500 user programs.
Final check
Know before you order
- 01The OB-6 has six voices of polyphony.
- 02Its effects are digital, while the core signal path is fully analog; disengaging effects enables true analog bypass.
- 03The sequencer supports up to 64 steps with rests and multiple notes per step.
- 04Connectivity includes MIDI In, Out, and Thru, bidirectional USB MIDI, stereo outputs, and pedal inputs.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How many voices does the OB-6 have?
It has six voices of polyphony.
02Is the OB-6 fully analog?
Its signal path is fully analog, with true analog bypass when effects are disengaged.
03What keyboard does it use?
It has a 49-key semi-weighted keyboard with velocity and channel aftertouch.
04What effects are included?
It includes reverb, delay, chorus, flanger, phase shifter, and ring modulator effects at 24-bit, 48 kHz resolution.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
3 detailsSound
- Digital effects
- Reverb, delay, chorus, flanger, phase shifter, ring modulator
- Oscillators per voice
- 2 discrete voltage-controlled oscillators plus sub-oscillator
- Low frequency mode
- Oscillator 2
4 detailsPickups & controls
- Footswitch inputs
- Sustain, sequencer start and stop
- Modulation control
- Backlit modulation wheel
- Performance controls
- Velocity, channel aftertouch
- Pitch control
- Spring-loaded pitch wheel
1 detailsPlayability
- Orientation
- Keyboard
1 detailsBody & build
- Color
- Black
3 detailsConnections & power
- Headphone output
- 1/4" stereo
- Expression inputs
- Filter cutoff, volume
- Audio outputs
- Left and right 1/4"
2 detailsSize & weight
- Sequencer length
- Up to 64 steps with rests
- Pulse width
- Per oscillator
42 detailsOther
- MIDI
- In, out and thru
- Arpeggiator modes
- Up, down, up and down, random, assign
- Mixer sources
- Oscillator 1, oscillator 1 sub, oscillator 2, white noise
- Envelope amount
- Bi-polar
- Velocity modulation
- Filter and amplifier envelopes
- Amplifier envelope
- Four-stage ADSR
- User programs
- 500
- Sequencer type
- Polyphonic step sequencer
- Filter modes
- Low-pass, high-pass, band-pass, notch
- Filter type
- 2-pole state-variable resonant filter per voice
- Hard sync
- Oscillator 1 to oscillator 2
- Product type
- Analog polyphonic synthesizer
- Analog distortion
- Stereo
- Korena Special
- false
- Mod destinations
- Oscillators, pulse width, filter cutoff, filter mode, amplifier
- Orientation
- Keyboard
- LFO waveforms
- Sine, sawtooth, reverse sawtooth, square, random
- Weight
- 20.00 lb. (9.07 kg)
- Power consumption
- 30W
- Filter envelope
- Four-stage ADSR
- Factory programs
- 500
- X-Mod sources
- Filter envelope, oscillator 2
- Power supply
- Internal
- Effect resolution
- 24-bit, 48 kHz
- Case details
- Walnut end panels
- Tier
- new
- Voltage
- 100–240V, 50–60Hz
- Clock sync
- MIDI clock
- Category Source
- detail
- USB
- Bidirectional MIDI
- Keyboard
- 49-key semi-weighted
- Keyboard tracking
- Off, half, full
- Polyphony
- 6 voices
- Dimensions (WxHxD)
- 31.80" (80.77 cm) x 4.60" (11.68 cm) x 12.70" (32.26 cm)
- Sub-oscillator
- Square wave, oscillator 1
- X-Mod destinations
- Oscillator 1 frequency, shape and pulse width, filter cutoff and mode
- Signal path
- Fully analog
- Product Type
- Analog polyphonic synthesizer
- Bypass
- True analog bypass
- Model
- OB-6
- Oscillator waveforms
- Continuously variable sawtooth and pulse, triangle on oscillator 2
- Source Id
- site51500000005624
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