Quad Lopass Gate Model 292t

Four low pass gates after Don Buchla's 292, each a vactrol-controlled filter and amplifier. A three-way switch per channel sets it as a linear gate, a lowpass filter with the vactrol's natural decay (the "snap" when pinged), or a combination of both. Each channel has a control voltage input and a manual offset knob; the four outputs are also summed to a mono mix. Part of the Buchla & Tiptop Audio 200t series, made under licence from Buchla.