: The first monophonic synth with user-programmable digital memory, breaking the strictly manual SEM paradigm.
The "Key Knobby" lineage represents the evolution of polyphony and memory: DO1 - Oberheim Key Knobby
For users of vintage "knobby" units, maintenance is a recurring theme in deep write-ups: : The first monophonic synth with user-programmable digital
The "Oberheim Sound" is defined by its , often contrasted with the "clinical" or "warm" sound of Sequential Prophet-series synths. This is largely due to the use of discrete oscillators and the unique 2-pole multimode filter found in early units. DO1 - Oberheim Key Knobby