Dante is a network protocol, which bases on the three-layer IP network technology, provides a low latency, high precision and low cost solution for point-to-point audio connection. Dante technology can apply to transmitting high precision clock signal and audio signal and can perform complex routing in Ethernet (100M or 1000M), to ensure a perfect sound effect; to solve the problem of complicated wiring of traditional audio transmission, reduce the cost. Adapt to the existing network, do not need to do special configuration. Block 4 is a Dante-enabled digital audio switch combining 4 input and 4 output.