Pyle Model : PMSA126BUCompact Desktop PA Amplifier System Bluetooth Public Address Amplifier - Compact PA Speaker & Microphone Receiver System with 70V/100V Output, MP3/USB/SD Readers, FM Radio (500 Watt) Features: PA Public Address Amplifier Receiver Compact Desktop Audio Source System Provides Convenient Microphone & Speaker Control Built-in Bluetooth for Wireless Audio Streaming Integrated Button-Activated Siren Alarm Function FM Radio with Digital LCD Display Connect & Stream Audio from External DevicesMP3 Digital Audio File Playback Compatibles Flash & SD Memory Card Readers USB Port Doubles as Device Charge Port RCA (L/R) Audio Inputs Aux (3. 5mm) Input (2) 1/4’’ -inch Mic Input Jacks (Mic1, Mic2)Speaker Output: 100V/70V/16 Ohm/8 Ohm/4 Ohm/Comfort Panel Button Control Center Audio Output Level LED Indicator Lights Independent Audio Channel Rotary Volume Adjustment Optional 12V DC Power Input Terminals What's in the Box: PA Amplifier Remote Control FM Antenna Bluetooth Connectivity: Built-in Bluetooth Audio Receiver Simple Pairing for Wireless Music Streaming Works with All of Today’s Latest Bluetooth Devices (Smartphones, Tablets, Laptops, Computers, etc. ) Bluetooth Version: 4. 0Bluetooth Network Name: ‘PYLEUSA’ Wireless Range: Up to 30’+ ft. Technical Specs: Power Output: 500 Watt MA Frequency Response: +/-3dB, 100Hz-20kHzImpedance: 4/8/16 Ohm. H. D. : S/N Ratio: >90dB, Mic 80dBMicrophone Sensitivity: 12mVUSB/SD Flash Memory Support: Up to 32GBDigital File type Playback Support: MP3/WAV/WMA Remote Control Battery: (1) x CR-2025 (included)Power Switch Selectable: AC/Off/DC Power Supply: 110V, 60Hz (12V DC Input)Dimensions (L x W x H): 11. 8’’ x 10. 2’’ x 3. 14’’ -inches