BitPerfect for Mac vs Pure Music

Try defeating upsampling in Pure Music just to see if it has any effect on the muffled sound you've been hearing. Though there were many positives from upsampling in PM, this seemed like one drawback. But a friend did not hear the same thing in his system, so YMMV.

Automatic sample rate switching is a MUST HAVE if one owns music in multiple sample rates.

I have not used either PM nor BitPerfect in well over a year. I made the switch to Audirvana Plus (A+) and have not felt any desire to return to the others. You may want to try A+ as well. There's a 15 day trial.

Another Audirvana+ user here. In a word...transparent.

Thanks, folks. Kenny, not sure how much time I'll devote to Pure Music at this point. With the last version update, my 5 year old Mini evidently has borderline capability of running PM and iTunes without having loud blasts of static take place concurrent with CPU activity spikes. And when I say loud....I'm lucky the speakers survived intact. Went back to the prior version of PM w/o problem, and decided to look around to see what was available. Easy enough to change the upsampling, I suppose. I'll also take a look at the Audirvana Plus.