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With Buchla 259e, the answer is — pretty twisted! This coveted dual oscillator module is the first-ever officially licensed plug-in version of a Buchla product.
While the unit can be used for traditional synth patches, its unusual inner workings makes Buchla 259e excel at metallic, cold, harsh, digital and screeching sounds.
The 259e consists of two separate oscillators — Principal and Modulation — where Modulation can be used either to modulate the Principal oscillator or as a separate generator of audible notes. Furthermore, the sine wave generated by the Principal oscillator is simultaneously applied to two of the eight available waveshape tables. A morph voltage pans between the two tables and a warp voltage varies the amplitude of the sinusoidal (driving) waveform. Both these functions can be modulated by the Modulation oscillator.
Three of the waveshape tables are actually not tables in the classical sense — they are simply portions of the 259e operating program, full of unpredictable noise and frequent silences. This is the innovative Mem Skew mode, possibly the most unique feature of the Buchla 259e. When these tables are selected, the FM controls are re-assigned to table scanning functions and the FM inputs become table modulators.
To sum it up, while the Buchla 259e can certainly be used for more traditional sounds, it excels at creating otherworldly twisted digital sonic landscapes. Which is why it is one of the most coveted synth modules on the market.
