The 651BD can pass a 24/192k signal from the coaxial output. Unfortunately, a Blu-ray disc will only "unpack" high res audio and high def video via the HDMI output. The coaxial output is limited to the 48Khz output from Blu-ray discs. This is not specific to the Cambridge Audio models and will apply to all blu ray players. Material streamed over network at higher sampling rates will work however.