Brooklyn's favorite rap trio, the Beastie Boys, have just taken off on a big tour, and from the photos we've been seeing, they're trying to make it clear that they are still contenders. If you check out all of their stage gear, it's clear. Drums, amps, etc. Clear. Bass player MCA (also known as Adam Yauch) commissioned Ampeg to build him some custom see-through bass amps, and we were more than happy to oblige. When they hit Seattle a couple of weeks ago to kick off the tour by playing a...