400W 12V HI-FI Stereo audio power Amplifier mp3 deluxe auto sound enlargerFeatures:Brand new and high qualityPortable practical and long cycle lifeThis amplifier is reasonable designed through introducing advanced BTL circuit technology.It is used an imported integrated circuit TDA7057AQ for anode amplification.It is supplied by single direct-current main，with automatic polarity protection to circuitry overloading and overloading，with good channel sepration.It has the characteristics of low noise，light weight，large power output and good sound quality.It has a factory equipment testing to match a standard.Specifications:Mains Voltage：DC 12V（center line for the positive electrode）Delivered Power：200W+200WOutput Load：4Ω - 8ΩColor: BlueSize: 14.7cm x 6.9cm x 4.1cm - 5.79inch x 2.72inch x 1.61inchPackage Included:1 x Digital Amplifier