Tiptop Audio Buchla Dual Oscillator Model 258t is an amazing sound design tool for electronic musicians and modular synth enthusiasts. With its dual oscillator design, this module delivers the unique and complex timbres that the Buchla synthesizers are known for. Now in an affordable eurorack compatible form.
The Model 258t is an accurate recreation of the original Buchla 258 oscillator module, with a few modern enhancements. Two independent voltage-controlled oscillators. Each has one processing input, a frequency modulation input and a 1V/oct input. Waveshapes, as well as frequency, can be voltage controlled. Model 258 oscillators feature low sine wave harmonic content, negligible settling error, and high short and long-term stability, even with rapidly changing ambient temperatures. TRIMMERS: There are three trimmers for each oscillator on the back of the module: 1V/oct is the octave tracking trimmer and is set at the factory using high precision instruments. SHAPE is the trimmer that set the sine wave, for the lower harmonic content of the sine wave. VC WAVE SHAPE sets the response of the waveshaper to the incoming control voltage. Both SHAPE and VC WAVE SHAPE trimmers are used to adjust the sine wave purity.
Built with high-quality components, the Tiptop Audio Buchla Dual Oscillator Model 258t is designed to last and is an excellent choice for anyone looking to add the signature Buchla sound to their eurorack setup.