Originally Posted by Gerardo2068
I bought Daft Punk's album Random Access Memories in iTunes and another copy at HD tracks.
I play them optical out from my mabcbook pro, I change the MiDi to 96k 24 2 channels, to a Rotel receiver and B&W speakers
They sound great but I feel that I don't really hear a difference between both files in quality terms. To me they both sound amazing.
I'm I missing something? What should I look for in hi res music?
A few comments:
1. You are in the wrong forum
. The answers you got, are canned answers for a larger debate and not relevant to the specifics you asked. You need to ask the question where folks have actual experience with the details you provided. See #2
2. Do a google search on hd tracks and title name and usually you get specific feedback. I did that and landed on this thread which even talks about the iTunes version: http://www.computeraudiophile.com/f1...dtracks-16161/
. Seems from my quick read that the itunes version may actually have a superior master/source but I did not finish reading the whole thread.
3. The HD track is 88/24. As such, you should set the sampling rate to 88 Khz in Midi control panel and not 96. Higher is not better. If you have a mismatch there will be a sample rate conversion from 88 to 96. Your iTunes version is 44 so it would always get resampled which makes the comparison more difficult unless you kept changing the sample rate back and forth between 44 and 88. Might want to get one of the plug-ins for iTunes that performs the auto-sample rate change based on what you are playing.
4. Seems like this title has comparatively little dynamic range based on my read of the other thread. As such, it doesn't make a good example of such comparisons.
5. When it comes to compressed music, the fidelity changes markedly from track to track or even within the same track. So your evaluation needs to be across the whole track and not say, just a few seconds here and there. iTunes AAC codec is quite good so finding such sections can be hard but listen to high-frequency transients during quieter periods and make the comparison there.