Mutec MC-3+ USB

[Axel]

I'm having a slight problem. I'm feeding my Oppo into the Mutec's S/P-DIF BNC. The Oppo is set to output 192k LPCM. When I play a BluRay, the Mutec's Clock in is lit at 48.0 and obviously the Devialet is telling me that the input is 48 kHz. Why am I not getting 192kHz at the Mutec's input? The S/P-DIF BNC is capable of receiving 192/24. I've tried adjusting the settings but with no success.
Any suggestions gratefully accepted!