holy crap.... the one I've been using (audio desk/digital performer) is horrible.
i wonder what quicktime looks like on the best setting. I imagine pretty bad as well.
anybody have a clean converter such as R8brain they would recommend for a mac?
Well, they don't indicate in the test graphs which version of DP was used for the testing, so it is possibly a different algorithm/SRC between DP 5.1/AudioDesk 2.0 vs. older versions of DP (4._ or earlier, I'm guessing, is what they used) if that has changed with subsequent updates.
From all the formally trained engineers I know that are Mac folks, and some others who are more hobbyists like the average TS.com member, I understand Bias Peak Pro to be the 'standard' or 'best' software for sample rate conversion on the Mac (others, I expect, will likely differ here). It's not cheap, though, at $499 (or $399 w/ educational discount). I have not been able to hear a difference in some sloppy (crappy playback) comparisons I have heard of individual tracks, though I know that is not saying much. AD/DP have been 'good enough' for me for a while, though SRC in both programs is excrusciatingly slow (more so in AD).