: The first true polyphonic keyboard in this series, available in 4, 6, or 8-voice configurations.

: Common issues include dead or intermittent keys, often fixable by cleaning or replacing contact pads without needing a professional tech.

The "Key Knobby" lineage represents the evolution of polyphony and memory:

: The interface encourages "exploratory" synthesis, where users can grab a knob to adjust filter resonance or oscillator frequency in real-time, which is essential for the "creamy" and "honey-like" sounds associated with the brand.

: Modern reissues like the OB-X8 include a specific "Vintage" knob. This digitally controlled parameter introduces subtle, per-voice variations in tuning and envelope timing to mimic the instability of 40-year-old analog hardware. Technical Evolution