Frequency Shifter Model 285t

A frequency shifter and a balanced modulator after the Buchla 285. The shifter moves every partial of the signal by the same amount, from 0 to 1 kHz, giving the difference and the sum on two outputs each, with control and FM inputs and an internal or external reference. The balanced modulator is a ring modulator whose amplitude control fades from zero to full ring modulation, with ring and variable outputs. Part of the Buchla & Tiptop Audio 200t series, made under licence from Buchla.