Back in 1981, this sequencer arrived as the digital brain of Oberheim's proprietary Parallel Buss system, letting you chain OB-X, OB-Xa, or OB-SX synths and DMX drums into a seamless production rig before MIDI even existed.
At its core, it's a polyphonic digital sequencer with 3,000 notes of memory expandable to 6,000, supporting up to 10 patterns and 10 songs across 8-10 tracks—perfect for layering multiple synth voices or drum parts. You get real-time recording, step entry, overdubbing, editing, quantizing, looping, transposition, and even patch changes with key splits for Oberheim synths. Eight independent CV/gate outputs (positive or negative polarity) control up to eight external analog synths, plus sync options for tape, DMX, or other Oberheim gear; a 16-digit alphanumeric display and cassette dump make navigation and backup straightforward. Housed in a sturdy blue metal chassis with wood side panels, it feels like a vintage command center built for studio pros.
Collectors and OB-series owners prize it for unlocking hands-free sequencing on those fat analog beasts, with praise for its rock-solid timing and polyphonic power—though its pre-MIDI exclusivity means it's a niche gem today, not for the faint of wallet.
