Fangrui Product Details 1. Excellent Quality: High Quality Material, Safe And . 2. Stable Performance: With Better Noise Performance, Excellent Output Drive Capability And Relatively High Small Signal Bandwidth, Large Power Supply Voltage Range. 3. High Fidelity: When Used As An Audio Amplifier, The Tone Is Warm And The Fidelity Is High. 4. Wide Range Of Uses: Suitable For High Quality And Professional Audio Equipment, Instruments, Control Circuits And Telephone Channel Amplifiers. 5. It Has The Characteristics Of Small Size, High Efficiency, High Power And Small Heat. 10 Kinds Of Up To 1023 Kinds Of Sound Combinations Increase The Heat Sink Cooling Effect Is Good Over-temperature And Short-circuit Protection Against Static Electricity With Interconnect Function Supports Bluetooth 5.1 Connectivity Transmission Distance: 10 Meters (if You Need A Longer Distance, Please Connect The External Antenna Yourself) Audio Input: Bluetooth+aux Audio Output: Left Channel 50w + Right Channel 50w + Subwoofer 100w Adapter Power Supply: Dc12-