2.1 home theater with usb fm, 1.USB,SD/MMC,FM,remote control+VFD,karaoke 2.Adapts to many audio devices ... 3.Passed FCC,CE 2.1 home theater with usb fm usb,1.USB,SD/MMC,FM,remote control+VFD,karaoke2.Adapts to many audio ... with usb fm-AS-T004 Output(RMS):25W+W*2S/N RATIO: >=80 dBFrequency response:50Hz-150Hz, 120Hz-18KHzDistortion@ REF:<=1%Speaker Unit ...