I've been enjoying my new rMBP for the past couple of weeks, but one thing has bothered me: speaker quality. I've compared it to my older 11" MBA and my girlfriend's 13" MBA and I'd consider the new rMBP the worst of the three. It's significantly more "tinny" overall. I did go into iTunes and try different equalizer settings, but even trying to boost the bass I get absolutely none. I do mean NONE...I put me ear up to the unibody and can barely hear it at all. I can hear bass pretty easily on the Airs, so I don't think it's a size issue. Any comments on speaker quality for you? This is the 13" rMBP, by the way.