The RME AoX MADI Extension BNC is a MADI expansion for the RME HDSPe AoX-M and HDSPe AoX-D audio networking sound cards.

Sold as an optional extra, the AoX MADI Extension BNC adds coaxial MADI I/O support to the HDSPe AoX cards, as well as Wordclock on BNC.

Up to two MADI extension cards can be installed as daughterboards to any AoX card.

A version with optical MADI I/O is also available (AoX MADI Extension (SFP)).

When paired with an RME HDSPe AoX-M (Milan)
Expands the RME HDSPe AoX-M’s total channel count with an additional 128 In/Out (or 256 In/Out) channels of MADI, for a maximum of 384 channels of I/O (256 I/O MADI and 128 I/O Milan/AVB).

When paired with an RME HDSPe AoX-D (Dante)
Replaces the HDSPe AoX-D’s Dante channels with up to 128 In/Out (or 256 In/Out) of MADI, for a maximum of 512 channels (256 I/O MADI and 256 I/O Dante).