300 Watt Power: The Pyle dual channel PA Amplifier gives your entertainment or PA system a boost; Provides convenient microphone and speaker control with quick connect speaker terminals; supports speakers w/ 4 16 ohm impedance, Bluetooth Compatible: The small professional integrated indoor public address receiver is equipped w/ Bluetooth wireless music streaming; Works w/ today’s latest devices including iphone, iPad, smartphone, computer w/ hassle free receiver pairing, 7 Inputs: The public address amp supports MP3 digital audio file playback via USB flash port and SD memory card slot; It also features AUX 3.5 millimeter input, 2 ¼” microphone input jacks, FM radio antenna input and optional 12V DC power input terminals, Siren Alarm Function: The compact desktop audio source system features integrated button activated siren alarm function which can be used for emergency situations and for capturing the crowd’s attention during a presentation or public announcement, EQ Controls: This mini multi source 2 channel compact PA receiver box features front panel button control center and digital LCD Display; Has crisp buttons, independent audio channel rotary volume adjustment and also LED audio output indicator lights, The USB input is only mean to connect to a USB ash drive (thumb drive)