80W 4 Channel Car DSP Amplifier High Fidelity Sound with USB Bluetooth Optical Coaxial Input for Android Radio Features： 1、Precise Sound Adjustment: Built in advanced DSP algorithm, DSP amplifier is able to process the sound signal in detail to ensure the balance and clarity of the sound of all frequency bands, including shocking bass, clear female voice, pure musical instruments, etc., you will feel an unprecedented sound experience. 2、Multifunction Solution: A high power, high fidelity amplifier effectively solve issues such as weak bass, unclear treble, and muddled sound quality from CD/DVD navigation, as well as insufficient radio power, sound level, unclear sound quality issues after the replacement of the speaker. 3、Intelligent Dynamic Adjustment: DSP amplifier can automatically identify the characteristics of the sound source, and optimize sound performance in real time to ensure that every song delivers the best sound. 4、Enhance Driving Pleasure: Whether it is a long distance trip or a city commute, the sound system equipped with DSP amplifier will bring you immersive music enjoyment, reconstruct your driving pleasure, and make every trip more exciting. 5、Input and Output: The car DSP amplifier supports wireless microphone, optical fiber digital signal, coaxial digital signal input. Support 2 channel AUX low level analog signal input, support 2 channels low level analog signal output . Specification： 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 Package List： 1 x Car DSP Amplifier 2 x Microphones 3 x Wiring 1 x User Manual