... in stage, shop and disco, KTV 2) high output pro loudspeaker with USB, SD card, remote control, Karaoke Output(RMS): P ... response: 55Hz-18KHz(-3dB)Power: AC~220V/50Hz3pcs Tweeters, 1pcs 10" wooferCarton Dimension(mm): 690*390*665Carton Meas(m³): 0.1790Pc ... /324/380 High-power; euphonious alt, sweet mediant, voluminous basspro loudspeaker with USB, SD card, remote control, Karaoke functions