Tiptop Audio + Buchla Model 257t Dual Voltage Processor is Now available to Order


Tiptop Audio let us know that the Buchla and Tiptop Audio Model 257t Dual Voltage Processor is now available to order.


This is the fourth module released in their Eurorack 200 series, a line of Eurorack-formatted remakes of classic Buchla 200 series modules.


The Model 257 Dual Control Voltage Processor consists of two identical sections, each of which permits several applied control voltages to define a single output voltage according to the equation:

(Va * K) + ((Vb * (1-M)) + (Vc * M)) + Voffset = V_out

The algebraic manipulations possible with this module include addition, subtraction, scaling, inversion, and multiplication. Also incorporated is the capability of using one control voltage (M) to transfer control from one applied voltage (V_b) to another (V_c).


Todd Barton, Buchla synth guru, has shared a playlist of videos, embedded below, that offer a deep dive into the 257t Dual Voltage Processor:


The Model 257t Dual Voltage Processor is now available to order, priced at $165.

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