Changed advance setting in Roon to max 48khz.

Then not muted as Roon down converts to 48khz

So thinking 565 optical limited to this.

Main system: 271, Arcam 860, 5500, 5500HC, 8x 33s, OPPO 203, Xbox One S, AppleTV4K, Mac Mini, Sony VW760, Stewart cabaret screen, LG 850 HDR TV, Linn LP12, Itok, Klyde, SkyQ,
Broken! G68D, 598DP
System 2: 565, Marantz SR6011, HD621, 519, 5000, 5000C, Mission 770, Quad 405x2, xBox1, SkyHD, Apple TV. JVC HD950.
Panasonic BD, Toshiba HD-DVD.