Amazing - for a few minutes yesterday with the Bluesound connected through my 800 Ref by Toslink optical cable and 800 connected to the DSP5200.2 (using a cable converter from RCA digital output & 5 pin DIN comms to RJ45 speakerlink), the Master speaker behaved strangely with the display going random and amber light flashing. It then became stable again and showed OFs 96k whilst playing a Tidal Master track! I haven't been able to get it to do this again no matter how hard I try!

808.6 Signature; 208, DSP5200SEs; DSP5200.2s; D600s; 1x DSP5000C; B&W Matrix 804s; B&W P4s; Thorens TD160 SME 3009 Shure V15; Pioneer PL71 SME 3009 Thorens V15III; Quad 33 control amp; Quad 303 power amp; Quad FM3 tuner; Sony MDS-JB920QS; Sony MDS-JB940QS; Sony ES Tuner; AIWA AD-F7700 cassette deck