The AVP1V Audio/Video Interface is a standard dual-gang wall plate that allows the line- or speaker-level outputs of movie projectors, audio and video tape/cassette recorders, phonographs, etc. to be connected to microphone inputs of house P.A. systems. The AVP1V provides audio interfacing and isolation with wide frequency response and low distortion. The AVP1V provides a 1/4-inch phone jack input for movie projectors and similar monaural A/V equipment. This input allows the AVP1V to be safely connected to the speaker outputs of older tube-type equipment: a 16-ohm, 5-watt load resistor simulates the speaker impedance to prevent damage to the amplifier output stage, while a high-frequency filter reduces hiss from noisy electronics. The AVP1V also features a 10kW linear input level control with a 0 to 10 calibrated knob.