35-Watt Phone Paging Amplifier is the ideal choice within the telephone paging industry. This 35-watt paging amplifier provides signal-activated, automatic muting of background music during a telephone page, and gradual return of music following a page. Features: 3 inputs:1 TEL, 1 MIC (Lo-Z), 1 AUX (Hi-Z). Sensitivity:.03 mV, MIC; -20 dBm, Tel; 85 mV, Aux. 600-ohm balanced TEL inputer for direct connection to page ports and adapters. TEL input has Automatic Level Control (ALC) for constant page announcement level. Separate MIC input for a low-impedance push-to-talk microphone. Music input - mutable by external contact closure or activity on TEL input. Separate volume controls for mic, paging, background music, and night ringer. Built-in night ringer can be activated from 90V ring signal or external contact closure. 25V and 70V constant voltage outputs, balanced and unbalanced. Wall-mount design provides minimum protrusion from backboard. May be rack-mounted using a rack mounting kit (sold separately). Easily accessible, recessed front-panel controls, for setting volume, muting, music, etc. RCA jacks provided to allow amplifier bridging to double the number of amplifier inputs and outputs. Thermal and electronic overload protection, resettable circuit breaker.