Sequential OB-6 – Oberheim’s Classic Voice Reimagined
The Sequential OB-6 is a modern, all-analog polysynth that revives Tom Oberheim’s legendary SEM-based sound in a 6-voice design. Featuring true voltage-controlled oscillators, a 2-pole state-variable resonant filter, and lush analog signal paths, it delivers the unmistakable Oberheim character. Enhanced with stereo effects, a polyphonic sequencer, and an arpeggiator, the OB-6 combines vintage tone with modern flexibility in a performance-ready instrument.
Key Features
-
Six analog voices: True VCOs with classic Oberheim warmth
-
Signature filter: 2-pole, state-variable resonant design inspired by Oberheim SEM
-
Performance-ready keyboard: 49 semi-weighted keys with velocity and aftertouch
-
Polyphonic step sequencer: 64 steps with parameter sequencing
-
Onboard effects: Stereo reverbs, delays, chorus, phaser, and ring modulation
-
Hands-on workflow: Knob-per-function interface with no menu diving
-
Extensive presets: 500 factory + 500 user programs
Customer Benefits
The OB-6 delivers the lush, organic sound of Oberheim’s classic instruments with modern reliability and performance features. Its immediate hands-on interface and expressive keyboard make it ideal for both stage performers and studio producers looking to add authentic analog depth to their music.
Quick Specs
-
Voices: 6 analog voices
-
Oscillators: 2 VCOs per voice + sub oscillator
-
Filters: 2-pole, state-variable resonant filter
-
Effects: Dual stereo effects with true bypass
-
Sequencer: 64-step polyphonic with parameter recording
-
Arpeggiator: Multiple modes, syncable to MIDI clock
-
Presets: 1000 total (500 factory + 500 user)
-
Keyboard: 49 semi-weighted keys with velocity & aftertouch
-
Dimensions: 80 × 32 × 11.4 cm
-
Weight: 9.5 kg
What’s in the Box
- Sequential OB-6 synthesizer
- Power supply
- User documentation
Use Cases / Ideal For
Perfect for producers and keyboardists seeking authentic Oberheim analog sound in a modern instrument. Ideal for lush pads, brass, soaring leads, and evolving textures in both live and studio settings.
Pros & Cons
✅ Pros:
- Authentic Oberheim-inspired analog tone
- Expressive 49-key keyboard with aftertouch
- Modern effects, sequencer, and arpeggiator
- Hands-on control with zero menu diving
⚠️ Cons:
- 6-voice polyphony may be limiting for complex arrangements
- Less compact than the desktop module version
The Sequential OB-6 is a perfect fusion of Oberheim’s iconic analog sound and Sequential’s modern innovations, delivering one of the most expressive and characterful polysynths available today.
