... to install and replaceable. ApplicationSuitable for KTV rooms, Home Theater Karaok, Conference rooms, Schools, stage performance occasion ... Technical Parameters Model AM66/AM88 Picture Mic Type Wired Radiohead Dynamic Directivity Cardioid Sensitivity -53dBV/Pa Frequency ... DJ Equipment, Pa Speaker, Vibration Speaker, Professional Speaker, Home Theatre Speaker, Karaoke Speaker, Horn Speaker, Long Throw ...