I feel lately (after 13 years) like I have been achieving big tone. I'm not amplifying myself more, but I'm being heard better. I don't feel like I'm playing harder. When I try to play harder, I lose tone. I think I have figured out how to pluck exactly hard enough (and how hard to fret) to put all the energy into vibrating the string and not lose any. Quite possibly, playing a lot of fretless for the last couple years is what made me feel like I have this extra control. I'm not sure how to share this technique, or even if I'm just tripping, but it's pretty damned cool. It's like some sort of martial art now (which I've never done). "Effortless power," or whatever.