Curious if you are still occasionally missing the first beat of a song with the automute feature turned off using the All USB Bridge? I use a MicroRendu via USB to the C52 with the new 1.07 firmware (Automute set to OFF) and will still sometimes miss the first beat of a song - 16/44 PCM, DSD64, it happens on all resolutions but not on every song. It happens often enough to be completely frustrating when sitting and doing critical listening.
While the C52 firmware 1.07 and the ability to turn off the automute on USB is certainly better than it was, I’m still missing the occasional split second intro during the odd times when the DAC output shows “SILENT” and it is driving me crazy. Ready to give up on McIntosh’s USB implementation all together.