Public address (PA) table top mixer power amplier. Commercial & industrial  range BGM & paging amplier. Mixer amplier with Mp3 player by USB input.  Rated outputs of 240W/480W/600W, 70V/100V and low impedance 4-16 ohms  speaker outputs. 3 microphone inputs and 2 line inputs. Mic1 on front panel by  phone jack, mic 2-3 on rear panel by phone jack. Line 1-2 inputs on rear panel by  RCA. Microphone 1 of VOX features of highest input priority. Microphone1-3 &  Line1-2 inputs volume control on front panel with bass and treble tone control.  Power and output level meters. Overload, short circuit and high temp protection.  With natural cooling fan to control the internal temperature.