And the opposite - dynamic range (corridor width) is the broadest on UHD BD. iTunes sounds the most compressed, can also be seen on the spectrograms - the corridor between min and max peaks is the narrowest.Encoded bitrate follows the same order: BD (saw peaks up to 13Mbps), Demo TrueHD (up to 8Mbps), Demo DD+ (constant 1.7Mbps), iTunes DD+ (constant 640kbps).Bass is the punchiest on BD, can partly be attributed to overall higher loudness as well.Overall quality sequence is: BD TrueHD, Demo disc TrueHD, Demo disc DD+, iTunes DD+.BD level is and sounds the loudest (by as much as 10dBFS, see attached screenshots). Attached spectrograms were taken at same volume level set on AVR. That's incidentally the exact same clip that is demoed on Atmos demonstration disc. I used the very opening scene after titles until the words "A man reduced to a single instinct: Survive" (as seen on screenshot). Did a small listening test with measurements.
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