We are manufacturer, professional power amplifier 1, 150W*2 2, 20HZ-20KHZ 3, ... . more nice from its. We are manufacturer, professional power amplifier.1, 150W*22, 20HZ-20KHZ3, Echo4, As for ... KTV rooms, more nice from its. Features: Output power: 150W*2 Frequency response: sound: 20HZ--20KHZ Turning ... connecting 6-8Ω speakers. 4, CNC equipments, inner with fan. 5, The voltage can for 185-260v last ...