Initially, as should be expected, timbre sucks. With little more than 2 hours on them the caps are sounding much better. They sound better than most electronics that will be used to feed them. Obviously the bass will also take time, but my initial impression is Quad ELS57s on massive steroids. Mind you my Quad days were decades back, but if timbre doesn't fully come around, it'll be easy to bypass the tweeter caps with Duelund JDM caps, so I wouldn't lose sleep over it. I am not expecting to need to do that mind you. Like I said, just over 2 hours and they are very immersive, engaging. It's difficult to stay on point, to critically listen. You just want to enjoy them.