... , DVD, MP3, etc. 3) install convenient. infrared wireless microphone system(KS168-B)Here is the Infrared Advantages:1 ... healthy, environmental -protected, health, green campus. Features:1. Amplifier, speakers, integrated in a compact loudspeaker, receiver outfitted.2. The ... simplify debugging procedures; 5. this host is focused on wireless amplifier single function, there is no audio input, output, and ...