Stage volume.
Let me repeat - stage volume. That is, MANAGABLE stage volume.
We've picked off a string of a half dozen outstanding gigs across two bands' personnel lately and the one common denominator is we've been really aware of our stage volume. That is, we've worked hard at keeping it under wraps.
Hell, one band hasn't even rehearsed in about two months and we're playing better than ever together. If I can offer one bit of advice to any performing band - it's to keep your stage volume as low as you can within reason. We've been very cognizant (sp?) of this lately and it helps every aspect of our playing - especially using dynamics for effect.
If you need ear plugs - yer playing too damn loud and there's a plethora of musicianship you're missing!