Bluray audio uses bluray codecs (like linear pcm, Dolby trueHD or DTS HD MA) and therefore can run both stereo and multichannel at a higher resolution than DVD, and equal to (but not proprietary and locked like) DVD-Audio. Also, DVD-Audio is limited to stereo. So bluray audio is all about 24/192 if available. Its a good format not marketed well (sound familiar).