Bass And Treble Controls, A 2.0 Ch Receiver Speaker Amplifier With A 12V 5A Product Specifications Rated Power: 40Wx2 Load impedance: 4-8? SNR: 90db Frequency: 20Hz-20KHz Distortion rate: 0.01% Packing Included 1 x Power Amplifier 1 x 12V 5A Power Supply 1 x User Manual Note If the battery of the remote control can not work, you can replace it with CR2025 model battery. ?200W+200W Maximum Power?-- This 2 channel mini audio amplifier provides 200W+200W peak power, rated power 40W+40W, suitable for your home theater acoustic sound system or your car. With mini compact size(6.14x3.07x1.85" / 15.6x7.8x4.7cm) makes it easy to carry. Amplifier weight: 0.77pounds/0.35kg. ?Bass Treble Control?-- Knob with LED backlight design, with volume, treble and bass control knobs, which allows you to adjust the high and low frequency separately for delicate sound. ?3.5mm AUX RCA Inputs?-- It supports RCA 3.5mm AUX Input, which compatible with mobile phones, computers, tablets, notebooks, MP3, MP4, TVs and projectors with AV audio etc. This mini audio amplifier is convenient to use, you can use it at home, and carry it to your car. ?DC 12V Input?-- Include 12V 5A power adapter, this power amplifier can be used in your car, your RV, your home. It is easy to be installed in car or marine, save space and convenient to operate. ?1-Year Warranty? -- We offer 1-year guarantee period. If you have any questions or concerns, please don't hesitate to contact us. It contains 1 Power Amplifier, 1 12V 5A Power Supply, 1 User Manual.