Originally Posted by nelamvr6
Oh yeah. Actually, they were more difficult to drive. They sounded only OK, the DX100 didn't have quite enough ooomph to really make them shine.
Not sure which Beyers you were referring to, but I have the Tesla T1s and I agree completely with you. Unamped, straight out of the DX100 they could get loud enough, but were missing the fullness, soundstage, and to use your work, ooomph. I now always keep a Ray Samuels SR-71A strapped to my DX100. I find that even with my Heir 4.Ais, they sound better through the amp than straight from the DX100. I'm not complaining about how they sound through the DX - pretty much anything I've tried sounds good through the DX100. They just sound better, much better amped.
I have a set of Heir 5.0s on order and am eagerly awaiting being able to compare them side by side with the 4.Ais and the Beyer T1s.