The Multicomp PRO MP009009 (120 Watt) is six input, 1U, PA Mixer/Amplifier and is perfect for a variety of small to medium-scale paging and background music applications. Six input mixer allows the connection of four microphones and two line-level audio sources, plus an input for telephone paging. Front panel controls are provided for each input, master volume, bass, and treble. These amplifiers can read MP3 files from a USB flash disk or TF card, plus it has FM radio and support for Bluetooth.