D4 Professional 4-Channel UHF Wireless Microphone System With 4 Handheld Mic

Each microphone has its own volume control knob on the receiver unit for adjusting the volume of the microphone separately to get desired vocal volume
The receiver has a 6.35mm audio mixing output to connect to speaker
4 balance XLR outputs for long distance connection to reduce the noise.
The handheld mics and receiver both have display for showing the working information
Suitable for public speech, classroom teaching, business meeting, karaoke, etc