Conference systems have gone through several major stages of development:
Phase I: 48V phantom-powered microphones, simple and fast, suitable for small meetings.
Phase II: Analog audio conference systems, which have problems such as disorder and howling when multiple microphones are used at the same time.
Phase III: Digital conference systems, which use digital control and analog audio parallel transmission, solve the problem of using multiple microphones at the same time, and add functions such as conference sign-in and voting.
Phase IV: Fully digital conference systems, based on network transmission technology, have greater development potential, support independent communication of large-scale conference units and low-distortion, anti-interference audio transmission.

