I think they really started to come together after about 100 hours. The 1st to the 50th hours were an exercise in "boy, I may have made a mistake", and I would reposition them. I'm sure you've been there. I've got about 300 hours on them now and they are just excellent in all respects. I have two different sets of electronics set up for them, one for serious listening and one for casual listening. The first is an ARC SP10II driving Sonic Frontiers SFM 160's (check "systems"by my moniker). In addition I take a signal out from "tape out" on the SP10 and plug it into a new PrimaLuna Integrated, which has a mere 35w per side. I purchased this for casual listening, i.e. short periods of time and background. What amazes me is how musical the PrimaLuna is and how well it can drive these speakers to moderate levels, especially considering the price of the unit. The bass potential of these speakers is not shortchanged by this amp in any way but I'm still playing with tube selection to which its quite responsive - as all of the tubes make a real difference the possibiities seem endless. Lots of fun!