Market demand innovative electronic devices with advanced features, and manufacturers need to deliver products that stand out from a growing field of competitors. Even in the audio field, customers require adaptive audio surround at very low noise, and this implies a higher complexity in term of channel count and microphone inputs. Product modular architectures make wide use of digital audio multichannel links like A2B® and eAVB (Automotive Ethernet AVB). To solve these challenges, high fidelity audio test system must handle multiple communication and digital audio interfaces (eAVB, A2B, SPDIF, etc.) with simultaneous tests over large channel count and multiple DUTs (Devices Under Test).