Well I just heard a Technical Death metal song where the bass is literally just as loud as the guitar. If you have ever listened to a lot of new death metal and bands or songs, most people (or should I say only bass players) notice that the bass guitar is over powered by the guitar(s).
The Song is Furioso by Pavor.
Check it out on youtube
http://www.youtube.com/watch?v=ms3rkheJbBE
(tell me if the link doesn't work, I'm pretty new to posting)