[20Wand20W 2CH Output]- 20Wand20W mini amplifier, the max power out can reach to 200Wand200W, providing much better sound quality and shocking auditory effects. Comes with 12V 3A power supply, available for 2-10 inches speakers.[Bass and Treble and Volume Adjustment]- Features responsive buttons for the power switch and knob control for the master volume adjustment. it can be adjusted according to your needs.[ Size]- Made up of aluminum alloy body, with blue LED lights for the knobs, the bookshelf speaker sound amplifier features a mini size, easy to bring anywhere it is needed.[Application]- Compatible with a of digital products, it can automaticly search and support FM radio frequency. It's perfect for your karaoke and home theater acoustic and , motocycles or boats applications.Colour:blackMaterial:metalPackage Contents:1 x Mini power amplifier1 x English manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.