Car DSP Amplifier 4 X 80W High Fidelity Support USB Bluetooth Optical Coaxial Input Digital Sound Processor for Android Car Radio Item Type: Car DSP Amplifier Voltage Range: 9-16V Memory Current: 5mA Maximum Current: 25A (14.4V) 4 Channels High Level Output (40 Ohm): RMS=4x80W Signal to Noise Ratio: >80dB Standard Distortion: 0.1% Frequency Range: 10Hz-20KHz Low Pass: 500Hz-20KHz High Pass: 10Hz-250Hz Basic Functions: 1. Support wireless microphone (Karaoke) input 2. Support optical digital signal input 3. Support coaxial digital signal input 4. Support 2 channels AUX low level analog signal input 5. Support 2 channels low level analog signal output 6. Support music playback via USB 7. Support Bluetooth music 8. Support original car machine for Android  DSP, Debug in the APP. 9. Support control via mobile APP ( for IOS/ for Android) Microphone Battery: Rechargeable Li ion battery 400mAhx2 (with built in battery when shipped) Fitment: Universal for Android car radio