Electro-Voice 810-100 is a 100-watt, all-silicon solid-state amplifier, designed for continuous operation in background music, public address, paging and sound reinforcement systems. The Electro-Voice 810-100 is equipped with two microphone inputs and one music input. The microphone inputs can be converted to balanced low impedance or 500/600 ohm balanced telephone line inputs by using plug-in transformers. The music input can be connected to a tuner, a high output ceramic or crystal phono, a tape recorder with its own preamp, or other auxiliary equipment. The Electro-Voice 810-100 features an electronic Music Mute (Precedence) circuit to quickly fade out the music while paging. The music fade feature operates only on the music inputs.