Future Sound Systems P.O.C.A VAC1

The Passive Optically-Controlled Attenuator, or P.O.C.A., is designed to give a set of vactrol-based gates in a compact-but-usable module.
Its four gates can be set to act as low-pass-gates, or normal optically-controlled attenuators (for a "VCA" type action) via jumpers on the rear of the module. CV is normalled in a downwards fashion, so that control signals input to the top gate can effect the gate at the bottom. Includes original box

Found Sound Australia Pty Ltd.
155 Elgin Street (Via Markov Place)
Carlton, VIC 3053
Australia