Feature: 1. Characteristic: The peak power is 4x90W at. 4Ω, support high definition bluetooth, lossless sound quality music, APP control, clear treble, midrange and bass. 2. Input and Output: The DSP power amplifier adopts high level 4 channel input, 4 channel output, RCA two channel input and two channel output. 3. Simple Debugging: Independent adjustment of front and rear sound field, high, mid and low, volume adjustment of front and rear sound field, delay adjustment of front sound field. 4. Universal Application: Car audio amplifier is widely used in car audio system, such as car speakers, good sound quality, bringing you convenience. 5. Premium Material: Car radio amplifier is made of upgraded premium metal material, this amplifier is sturdy, not easy to break, practical in use. Specification: Item Type: Car Amplifier Material: Metal Working Voltage: 12V Standby Current: <300ma Peak Power: 4x90W At. 4Ω Isolation: >90dB Distortion: 0.01% Frequency Corresponding: 20HZ-20KHZ Signal To Noise Ratio: 105dB Applicable Models: Universal. Package List: 1 x Car Amplifier1 x Manual