Audio Engineering Society standards

AES3 is a standard for the exchange of digital audio signals between professional audio devices. An AES3 signal can carry two channels of pulse-code-modulated digital audio over several transmission media including balanced lines, unbalanced lines, and optical fiber.

organization of professional audio engineers

thumb|MADI interface-box (RME MADIface) equipping both optical and coaxial interfaces, each can handle 64ch digital audio per link.