I know you really like Chris Carrabba, and if you honestly can't hear how much auto-tune there is in these songs, that's totally fine but that doesn't mean I'm crazy for hearing it and thinking it doesn't sound preferable. As that dude above me said, once you sit in-studio with a producer tuning someone's vocals, you can hear it right away. It's sort of an unfortunate side effect of having the cool experience of sitting in while a producer mixes. That doesn't mean it's a bad thing, it just means you notice when it's done either a) poorly, or b) in a way that you don't prefer.
I listen to music constantly and these are some of the most poorly mixed vocals (gotta say this is an opinion thing of course) that I've heard...at least out of music I listen to.
I can tell his performance was probably great in studio, but I really dislike how they were mixed. Maybe I'm totally wrong and Evan was right and it's some weird bitrate thing and the high quality version will change my mind.
Admittedly, unlistenable is sort of an extreme word on my part, but unlistenable meaning that I would not listen to this record if the vocals sound like that on all the songs. Not that I want to rupture my eardrums to never hear them again or anything.