Output Power: Woofer: 1 x 20W Satellites: 2 x 15W Frequency response: 60Hz to 18kHz S/N ratio: >70dB Channel crosstalk: >35dB Subwoofer size (W x H x D): 170 x 250 x 320mm Satellite speaker size (W x H x D): 105 x 800 x 120mm Karaoke function Packing size (W x H x D); 860x630x415mm (2 sets/carton) Qty: 20''''container: 248 sets 40''''container: 514 sets 40''''HQ container: 604 sets