Audio on M SL is balanced digital audio close to AES/EBU

see here http://en.wikipedia.org/wiki/AES3

but the protocol is SPDIF AFAIK.

Look at the msb site they have SPDIF and AES/EBU so that audio "should" be equal.
Read the protocol differences on wiki - dont know if that is important for that application as all is consumer base.

Robert