There’s also an issue where the first few moments of tracks are muted. When I contacted McIntosh support this was their response:
"DAC’s can decode more than one format or resolution; the digital signal has a flag in it to let the DAC know how to decode it. This takes a few bits, so, the first ½ second is muted, because, if the format has changed from the last thing it decoded, it will decode wrong and a burst of noise comes out the system.
In the past, CD’s and digital tracks almost always have a couple seconds of silence (sending all zeros) to give the DAC a sec to properly decode. But, the record companies selling digital tracks have forgotten about this and some tracks start at time [0:00] instead of [0:03] watch the time go by on a CD and notice this).
So, we can mute to avoid noise bursts, or not mute and risk, (sometimes loud and possibly dangerous to tweeters) noise bursts. AS you are playing USB, I assume it is from a computer, see if your music playback program can add a little silence between tracks.
We have not added a feature to defeat the mute in C52 firmware updates."