This video states clearly that iTunes doesn't alter the audio in any way, it only changes playback level: https://www.youtube.com/watch?v=DTDoJKMi72M

Hello,   I have registered here just for this reply.   For future readers: This is very probably a misunderstanding of how Brainworx' DR Meter works. The DR Meter doesn't consider the whole dynamic range, it only looks at the highest 20% of the dynamic spectrum. So if you shift the loudest...