OSC Oscar Synth
OSC Oscar Synth

OSC Oscar Synth

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In near museum grade condition, the legendary Oscar 

 

The OSCar is a classic mono-synth from British manufacturer Oxford Synthesiser Company (OSC). It came in 1983 and though it was in the same class as the Arp Odyssey and Minimoog mono-synths, its late arrival makes it one of the more advanced programmable mono-synths of its time! It's got a really cool sound, digitally controlled dual oscillators with analog filters, and plenty of programmability all packed into a quirky little plastic case with 37 keys. MIDI also appeared on later revisions as well.

Its sound starts out from its two DCO's. The synth is monophonic but can also achieve duophonic capability when using just one oscillator per voice. Waveforms offered include sawtooth, triangle, and square-, variable-, or modulated-pulse waveforms. In addition to these analog waveforms, there's an additive-synthesis function allowing you to create your own custom waveforms by simply mixing the amplitudes of any of its 24 harmonics using the keyboard. Up to 24 of these custom waves can be stored and used with either oscillator.

Once you've got some sounds it's time to hit the filter section - the real analog heart of this synth! It has two 12dB/oct filters which can be linked for a steeper 24dB/oct slope. It features switchable lowpass, highpass and bandpass filtering and your basic frequency cutoff and resonance type controls. The filter has its own ADSR envelope as well (a second ADSR envelope controls the amplifier section). The filter can also be modulated by the LFO. The OSCar's LFO offers triangle, sawtooth, square, and other wave shapes and can also be used to modulate the amp, pitch, or pulse-width. There's even a sample-and-hold function.