Connections for NAD M51 DAC

I plan on purchasing a M51. I wish to use a audiophillieo2 on the COAxial input. I also have a Arcam DV137 which I use as a transport. I don't like using the toslink input. I could connect it via HDMI. The M51 also has an AES/EBM connection. The DV137 does not. Is the AES/EBM a balanced SPDIF input? Is it 75ohm? Are there adapters or cables that will convert the AES/EBM input to a single ended COAX input such that I might connect the DV137 via this route? Would that be better than the HDMI route? Thanks in advance for your help.