Programmable Complex Waveform Generator Model 259t

A complex oscillator after the Buchla 259: a modulation oscillator and a principal oscillator, each with a large frequency knob scaled in hertz and notes, fine tuning, keyboard, control voltage and FM inputs and a gate output. The modulation oscillator has three ranges and three waveshapes; the principal oscillator's sine is folded by timbre and shaped by symmetry and order, and can be phase locked. Pitch, amplitude and timbre modulation and phase lock are switched from the modulation oscillator, whose depth is set by the modulation index. Part of the Buchla & Tiptop Audio 200t series, made under licence from Buchla.