Pyle PCAU22 Home Amplifier is perfect for powering any stereo system. Complete with USB port and 2 x 40 watts of power -- this simple to use and durable amp has bass and treble controls, a slick blue LED output level display, L/R RCA inputs, and 4 speaker outputs. Using sophisticated circuitry and premium components for uncompromising musicality -- this product is famous for delivering powerful and accurate sound. This small but powerful amp delivers clear and crisp audio for it listener. Durable and affordable, this amp is made to last.