HDMI is the only digital connection that can transmit those lossless formats (Dolby True-HD & DTS HD-Master Audio) from bluray discs to the full resolution (26/48 or 24/96).
If you use coax or optical digital (Toslink) out it will down convert it to lossy core (16/48).
On your bluray player you will have to change the setting on the coax output to PCM.
If you use coax or optical digital (Toslink) out it will down convert it to lossy core (16/48).
On your bluray player you will have to change the setting on the coax output to PCM.