The V-01S is a plug-in type VCA module designed to be used in conjunction with TOA's 900 Series and BG-2000 Series amplifiers. Its 3P terminal block is equipped with a 24 V output that supplies power to an external controller, and a control input. The gain between IN and OUT is set within the range of –100 to 0 dB referenced to the 0 – 10 V control voltage.