IntroductionCan play the disk SD /MMC card for music ， support Mp3 music format.( USB+SD +FM)Select high-power Two channel professional power amplifier integrated circuits， minimal distortion， strong powerPre-professional level input operational amplifier IC for circuit design， sound ， transparent，bright.Filtering and anti-large-capacity power circuitDSP sound field pattern of the fourTow main channel SpecificationMP3， iPod， CD /DVD player input jack Low distortionFrequency response : 20Hz-20kHzSNR : 85 dBJack input: standard stereo jackReader， U-disk format : MP3 FM Hight control :12dB +-10 KHzBass control : 12dB +-100HzThe signal level : 220 MV 47 K reader， U-disk formet :MP3 FMKey functionVolume: volume adjustable and host switch Bass: bass tuning Treble : Hight adjustment mode: play mode ，selectionclickn play U disk's songdouble click played SD's songPlay/scan: the play/pause adjustable.play modes: short pause ，click this button again according to play .short fm mode， click this button for fm automatically adjustable.next: next (in the play)Prev Back (in the Play)Voltage: DC 12VOutput Power: 20*20 WDimensions: 125*70*41（mm）Material: lightweight aluminum Color : Blue (we also have the Red & Gold available)Packing Content1X Stereo Amplifier1X Use Manual 2X Cable