Each interface packs serious I/O with serious audio quality. Start with the flagship 1248, or mix and match any combination of the three I/O's to suit your specific needs. Add a second interface with a simple Ethernet cable. Add the five-port MOTU AVB Switch to build an expanded system of 3 to 5 interfaces with AVB audio networking (or 6+ with additional switches). Regardless of which interfaces you choose, they all share industry-leading features that are easy to use and shared among all products.