ZNU 2CH Car/Home Power Amplifier AMP USB SD FM MP3 MIC Mixer Digital Player Remote This special purchase mini audio amplifier is ideal for both home and car audio applications. Can play the disk SD /MMC card for music and FM stereo radio, support Microphone Mp3 music format.( USB+SD +FM) Select high-power 2 channel professional power amplifier integrated circuits, minimal distortion, strong power Pre-professional level input operational amplifier IC for circuit design, sound , transparent, bright. Voltage: DC 12V,Output Power: 2* 40W.Treble/Bass/Volume control