The PA-20M is very compact amplifier specifically designed for fixed or mobile applications. Its small size and light weight make easy integration in little space. The 12V DC operation perfectly fits for portable use or for installations where direct AC power supply is not available.They are an ideal solution for zoning, information points, ticketing counters and vehicles using rooftop speaker system. This compact amplifier features a MP3 player with a UBS port, plus a siren triggered with a push button from thefront panel. 2 Mic inputs are available with TRS 6.35mm jacks, plus 1 Aux stereo input on the rear panel with RCA connectors. All volume controls are on the front panel and it includes a simple EQ setting. The output section uses euro block connectors and features 4ohm load. With supplied bracket, this amplifier can be easily mounted on the wall orunder the table.