Built-in independent control module, stereo sound source real-time acquisition. Each module can run at the same time and they do not interfere with each other. 2 or 4 optional audio channel models. The name of each channel input is defined by the management software. 10 / 100M adaptive, support DHCP / IP settings, support for LAN and WAN. 1U design, small-sized and lighter-weighted; anodized.