The only brand new guitar I've ever owned is the one I built last year. When I first got it together I was a bit disappointed that it sounded brighter and thinner than I had hoped. It has a heavily chambered mahogany body with a 1/4" maple top and a maple neck. The wood was all very old (decades old). However, I swear it now sounds thicker, richer, and darker. And not just because my ears adapted to it: I have a 1977 Gibson to directly compare it to. That was my yardstick for fat, and now it seems bright in comparison. So, do new guitars and/or pickups mellow or darken in sound over the first several months of their lives? Or am I totally losing my marbles?