... /SD/MMC media card reader input Mini amplifier system NEW! 2.0 Hi-Fi active mini speaker system X12TOP SELLER! BRAND NEW ... input: ~220V-240V,50Hz/60Hzl Frequency response: 20Hz-20kHzl Low harmonic distortion (<=1%THD)l Dimensions: 110(W) X135(D) X210 ... speaker,5.1 multimedia speaker,2.1 multimedia speaker,2.0 multimedia speaker about 100000 set per month. 2.0 Hi-Fi active mini speaker ...