I got a special test drive on these speakers.. and WOW was a first thought, and hhhhmm.. OK was the secodn thought... I walked into their room Saturday right before 6pm. THey were getting ready to wind down, but he asked if we would like to hear something on them. WELL HELL YES!!! So he pulls out Led Zep, and plays Dazed and Confused on them at a really great volume... ... WOW... the bass was super clean and super tight.. The imaging was way over the top, and the cymbols were ultra clean and really crisp. The vocals I would have called OK though. Nothing outstanding about them. The other thing about them was at points, it sounded like there might have been a freq range that wasn't quite there, but then again, this is a hotel room we are listening to them in. I would love to hear them in a room tuned for them. I also know that Zep was never the greatest mastered band, so that could be why they seemed a little thin in places to me too. My wife agreed on all these points. We were really impressed by the sound though. They were running these speakers on a huge CAT tube amp. Talk about tube.. 16 of those beasts in there, and I have a feeling that pure class A had a lot to do with how great the speakers sonded on it..