The active transmitter combiner is the multi-channel equipment that use the common antenna. With the active transmitter combiner,
the signals of up to four type transmitters of wireless in ear monitor can be combined onto a single antenna. Also can constitute the antenna arrays with connecting four antenna to insure the antenna full precision coverage. The four high frequency antenna of input insure the input signal can connect the common output and can not be receded. The active transmitter also can be power supply for four transmitters at most or antenna meanwhile by the BNC input socket.