Pass DTS HD master and true HD?

[bokes]

How can I get the 1550 to pass DTS HD master and True HD audio through the optical out?

Reason I ask. I have a pair of pioneer wireless surround headphones that I use late at night. There is no issue when I select and play normal DTS or Dolby Digital tracks from blu rays- but last night i tried to select the DTS master audio track and I get silence.

Are these tracks only passable over HDMI?

[Kal Rubinson]

Yes.

[bokes]

Is it possible this will be allowed through a future update?

[Nuthed]

No. Optical and Coax digital (S/PDIF) are not capable of passing uncompressed multi-channel sound and never will be. They lack sufficient bandwith I believe.