Electro-Voice 861 is a versatile background music receiver that combines a sensitive Hi Fidelity AM-FM Tuner with a 15 watt (RMS) audio amplifier. It features a microphone pre-amplifier, external amplifier jack, crystal phono jack, Multiplex Converter jack, and microphone jack. The unit has speaker outputs for 8 ohms as well as 25 and 70-volt lines, and a microphone precedence circuit for suppressing the music channel while paging.