... . more nice from its. We are manufacturer, professional power amplifier.1, 150W*22, 20HZ-20KHZ3, Echo4, As ... KTV rooms, more nice from its. Features: Output power: 150W*2 Frequency response: sound: 20HZ--20KHZ ... 180mv MIC: 10mv Details: 1, Within ECH+DELAY stereo mixer , as by the center equipments control it; ... 2, There be front stereo mixer design, as for PRE, turning. PRE ...