... ,FCC,ISO,ROHS 5.suitable for multimedia room 2.0 Professional Active Speaker with USB/SD/Remote ,column speaker strong point:This active ... approved Specifications:·Frequency Response:20Hz-20Khz ·MIC:60Hz-14Khz·Distortion:≤0.2% ·Amplifier Voltage:≤10mv·S/N:≥86db(±2db) ·Line:0db ... ,if you need,please show me when you place order ! 2.0 Professional Active Speaker with USB/SD/Remote