Behringer high performance 32 channel madi expansion card for x32 behringer x madi high performance 32 channel madi expansion card for x32 the x32 s expansion slot provides flexible and expandable connectivity for many different applications the x madi expansion card can easily be installed in place of the x usb card that is included with the x32 the 32 channel interface brings even more i o options to the x32 by instantly enabling it for madi networking the madi or aes10 protocol is quic