Product Features:20W+20W 2CH Output: 20W+20W mini amplifier, the max power out can reach to 200W+200W, providing much better sound quality and shocking auditory effects.Bass & Treble & Volume Adjustment: Features crisp responsive buttons for the power switch and rotary knob control for the master volume adjustment. it can be adjusted according to your needs.Two Main Channel Output: Left and right channel outputs are interfaces for speakers or speakers.Low distortion supplies a clearer, stronger and more powerful sound.Compact Size: Made up of aluminum alloy body, with blue LED lights for the large knobs, the compact bookshelf speaker sound amplifier features a mini compact size (4x3x1.6"/ 105x75x41mm), easy to bring anywhere it is needed.Application: Compatible with a variety of digital products, it can automaticly search and support FM radio frequency. It's perfect for your karaoke and home theater acoustic sound system and cars, motocycles or boats sound system applications.Note: For home use, you need to match 110-240V to 12V power adapter (not included)Product Specification:Product name: Power AmplifierColor: BlackMaterial: Aluminum AlloyInput voltage: DC 12V power: 20W+20WMax power:l 200W+200WChannel: 2CHLoad impedance: 4-16SNR: 90 dbFrequency: 20Hz-20KHzDistortion rate: 0.0001Size About: 125 x 75 x 40mm(L*W*H)Package Included:1 x Power Amplifier1 x User Manual