Most contain multiple volume controllers, tone shaping EQ, and multiple auxiliary routing functions. These microphone systems, whether hand held, lavalier, or headset, give the performer or speaker total freedom of movement. These devices set the level of sound to open the gate. When the gate opens, sound comes through. When the gate closes sound stops.
Noise gates are great for getting rid of annoying extraneous sound.
The volume workhorse of any audio system. Available from 20 watts per channel to well over 2000 watts per channel. Mixer A mixer containing one or more power amps. The ultimate in convenience for all P.A. applications. Powered Monitor A speaker system with its own built-in amplification.