Is it just me, or does it seem that the more recently manufactured 6P's are better in build quality, especially where the speakers are concerned, with sound through a headset? For example, my latest Gold 6P has a build date of January 30, 2016, whereas my original Aluminum 6P had a build date of October 31, 2015. The speakers on my Gold 6P seem to have a fuller sound. It's interesting.