Muddier audio after fall update?

I don't know if I'm imagining things, but it seems that the audio has recently gotten muddier on my Tivo Premiere. It seems like there's more bass. Could it be possible that the latest update changed the audio processing? For example, when I watched a recording of The Blacklist yesterday, it was quite hard to hear the dialogue through all the background sounds and music. This has never happened to me before.



I mostly watch TV with headphones on, so if the bass increased for example, that would make everything sound muddier.