A lot of good recommendations in this thread. My short list is VAC Renaissance and Ayre K-1xe. Others that I am intrigued by:
Burmester 035 (or 011)
Hovland HP 200
Conrad Johnson ET-5
VTL TL-6.5
Wyetech Opal
The Hovland, CJ, and Wyetech do not have balanced outputs so I am more reluctant to pursue those...