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