Product Feature 2.1 Channel Audio Output: 2.1 channel output 20W2(L/R)+40W(sub), can drive most passive speakers and subwoofers for home/car/marine/outdoor, and with unparalleled sound superiority. Low distortion provides a clearer, stronger and more powerful sound. Perfect Design: With standard stereo RCA and 3.5mm AUX inputs, can be perfectly compatible with ipad, mobile phone, MP3, CD player, TV, computer etc. In addition to main volume control, treble and bass control, the bass control is specially designed, easy to enjoy high-quality music. Bass & Treble & Volume Adjustment: Features crisp responsive buttons for the power switch and rotary knob control for the main volume adjustment. It can be adjusted according to your needs. Compact Size: Complete design with exquisite appearance, matte silver case looks modern and durable, unique structure design easy to install in car/marine, saving space and convenient to use. Application: DC 12V input suitable for many scenarios, can be used in your car, your boat, your RV, your golf cart, your home anywhere you need a good amplifier with low distortion and acoustically accurate reproduction of music. Package includes 1 x Power Amplifier 1 x User Manual