Tried others, the B22, GS-X, LF, WA5 - they all had their plusses (WA5 was great with the K1000, LF was a good all-arounder, B22 was a solid amp for planars) but as I said the BA did the best with the most - especially the HD800 and Audeze, which are my favorites. It is also supposed to mate wonderfully with high efficiency like Grado, Denon, Fostex dynamics, etc., though I haven't owned any of those since I've owned the BA
The ones I have not had the chance to try that I have wondered about is the DNA Stratus and the Apex Pinnacle
As sleepy said, tube cost is also a factor, though the stock EH for $150 and TS for $20 are still pretty darn good.
True, true. If for whatever reason you may have desired a solid state balanced amp what would you have considered? On the tube end I had not considered the DNA, looks great, might need to do some research into it.
Edited by Maximilian - 10/15/12 at 4:48pm