I've noticed especially for movies that they really mix for center channel of at least 5.1 audio and if that's not properly down mixed for stereo speakers you get the situation where everything else is crazy loud and dialogue is whisper quiet so I'm turning the volume up and down on movies that my old receiver doesn't play nice with. that and there is some awful audio compressor streaming studios use that makes voices sound "tin can" like but I am told I'm one of the few bothered by it.