Last sunday, I bought a Tensai set (pre and power) to replace my right-channel-cracking NAD 2700 THX. There are no words to describe how good the amp is. The crystal-clear brightness yet with deep bass and epic middle made my KEF Reference sound like upgraded speakers. And the cherry on top is that the amp is one of the sexiest that I've ever owned.
The pre is mosfet powered and sounds like the AA technics of old times but, alas, no remote so I'm keeping my Marantz as a pre.
Got them fully revised and recapped for 350€ - one of the best ROI to date.