So I'm using a USB Dac, and trying to get the most out of iTunes. I have two questions. Within the EQ setting, there's the iTunes preamp on a range from -12db to 12db (defaulted at 0). I was wondering if lowering this all the way to -12db will have any positive effect. My only reasoning...

Before I came to this site, I thought Bose was as good as it got. So I bought a pair of Bose OE because they looked snazzy, and damn that in store demo sounded good to my virgin audiophile ears. Now don't get me wrong, I actually do like them a lot because I can bring them to the library and...