... for KTV rooms. more nice from its. We are manufacturer, professional power amplifier.1, 150W*22, 20HZ-20KHZ3, Echo4, As for KTV rooms ... informationoutput freely. and sending anythings well freely also. 3, GroupsA,B speakers design by the time. outside connecting 6-8Ω speakers ... 260v last working; 6, Sytem wire protection : A, Horn system B, loading system C, Short circuit D, information system 7, Inner ...