EAT KT-88 tubes

In Germany EUR 450,- for a pair (matched, obviously).

Ignore those exact figures for a moment. I bought them for my EUR 2.2k Unison S2K, a very big leap of faith indeed. But one I have never remotely regretted from the first moment on. Can it compete with a 20k amp now? Don't know, but it sure has become another amp, definitely better in every respect (you're spot on:"sing" is indeed what it does).

I just received word from Mussc Hall that the second tube will be replace at no charge. I think the US retail is $800.00 for a matched pair. Expensive, but worth it.

Exelchuck, I am sure they sound spectacular, but certain factors have to be weighed, like the fact that it would cost me $4,800 to retube my amp with the EAT tubes!!