Feature 1Characteristic: The peak power is 4x90W at. 4, support high definition bluetooth, lossless sound quality music, APP control, clear treble, midrange and bass. 2Input and Output: The DSP power amplifier adopts high level 4 channel input, 4 channel output, RCA two channel input and two channel output. 3Simple 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. 4Universal Application: Car audio amplifier is widely used in car audio system, such as car speakers, good sound quality, bringing you convenience. 5Premium Material: Car radio amplifier is made of upgraded premium metal material, this amplifier is sturdy, not easy to break, practical in use.Item Type:CarAmplifierMaterial: MetalWorking Voltage: 12VStandby Current: <300maPeak Power: 4x90W At. 4Isolation: >90dBDistortion: 0.01%Frequency Corresponding: 20HZ-20KHZSignal To Noise Ratio: 105dBApplicable Models: Universal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x CarAmplifier1 x Manual