Originally Posted by gold333
Well I didn't want room acoustics or a separate amplifier / decoder to influence what I was hearing.
Why would you need to use different amps/decoders? Any A/V decoder that handles TrueHD also handles DD -- just switch between S/PDIF and HDMI. And many such decoders have a headphone output so that could be used instead of speakers. If the decoder has no HP output, then the line outputs can feed an external headphone amp.
I just send both soundfiles straight into in-ear low hz earbuds using a pc and could really hear the difference. To me the difference was even more pronounced than between say an mp3 at 128kbps and 256 kbps, but it was the same sort of difference, just more sound information in one compare to the other but I guess mileage may vary obviously.
I have no reason to doubt you hear a difference. I am suggesting that the difference is not solely due to the codecs, and therefore cannot be ascribed to the codecs. The VLC decoder is an unknown quantity, uncertified for either TrueHD or DD.