Pyle Model : PTA44BT BLUETOOTH HOME AUDIO SOURCE AMPLIFIER BLUETOOTH HOME AUDIO AMPLIFIER, 4-CH. AUDIO SOURCE STEREO RECEIVER SYSTEM WITH FM RADIO, MP3/USB/SD/AUX PLAYBACK (500 WATT) Features: * 4-Channel Amplifier System * Built-in Bluetooth for Wireless Audio Streaming * FM Radio Tuner with Digital LCD Display * Front Panel Button Control Center * Audio Source Input Mode Selector * Connect & Playback Audio from External Devices * Headphone Jack with Independent Volume Control * (2) 1/4'' Microphone Input Jacks * Built-in Microphone Talk-Over Function (MIC1 Only) * MP3 Digital Audio File Support * USB Flash Drive & SD Memory Card Readers * Push-Type Speaker Connectors * Aux (3.5mm) Input Jack * REC + Subwoofer Output RCA (L/R) Connectors * Audio Input RCA (L/R) Connectors * Short Circuit & Over Voltage Protection * Audio Configuration Settings: Treble, Bass, Master Volume, Echo, Mic Volume * Convenient Audio Source Control for Home or Office Use Bluetooth Connectivity: * Simple & Hassle-Free Pairing * Instant Wireless Audio Streaming Ability * Works with All of Today’s Latest Bluetooth Devices * (iPhone, Android, Smartphone, iPad Tablet PC etc.) * Bluetooth Network Name: PYLEUSA * Bluetooth Version: 4.0 * Wireless Range: Up to 40’+ ft. What’s in the Box: * Audio Amplifier * Remote Control * FM Antenna Technical Specs: * Power Output: 500 Watt MAX * Amplifier Design: 4-Channel * Impedance: 4-8 Ohms * Frequency Response: 20Hz - 20KHz * Signal to Noise Ratio: >81dB * T.H.D.: <0.3% * Headphone Jack, 3.5mm * Radio Station Memory: 30 Station Presets * Digital File-type Compatibility: MP3, WMA * Maximum USB/SD Flash Support: Up to 64GB * Remote Control Battery: (1) x 3V Lithium Button Cell CR-2025 (Included) * Power Cable Length: 4.2 ft. * Power Supply: 110/220V, Switchable * Dimensions (L x W x H): 13.0’’ x 9.84’’ x 3.54’’ –inches.