TipTop Audio 259t Complex Waveform Generator Eurorack Module (Buchla)

This is the big one - the orginal much-imitated complex oscillator from the mind of Don Buchla, now recreated in Eurorack format, complete with ART compatability for 21st-century tuning and control. Sweet!

The 259t is the largest and most complex analogue oscillator from Don Buchla's legendary 200 modular synthesiser. The 259 originated the concept of the "Complex Oscillator" in the 1970s and has been reissued by Buchla and Tiptop Audio in Eurorack format.

The module consists of two oscillators, called the Modulator and Principal, with a middle section that provides voltage control over the internal modulation paths between the two oscillators, resulting in highly complex timbres.

Additionally, the principal oscillator passes through multiple unique voltage-controlled waveshapers and crossfaders for further signal processing. The module's pitch can be controlled with 1V / OCT or via its internal auto-tuner and ART control to create precisely pitched notes.