Boulder 850 monos

Anyone else here with experience on this power amps ? would appreciate some inputs. Reviews seems promising.

07-23-11: Skreich
I've heard a lot of the big Boulders, and these did not share their sonic signature at all, in my opinion.

Skreich, did you listen to the Boulder 1060? That amp is in another league to the 850's & is very organic, fast, quiet, dynamic & powerful to my ears and I would say dead neutral. In this way, the 1060 greatly benefits from a well matched tube preamp.

I've heard the Boulder 865 integrated & really like it's sound which is surprisingly powerful for an integrated, natural sounding & accurate. You can really hear the quality in these amps..no trace of distortion or noise, the Boulder just lets the music through and gets out of the way. This series gets a bad wrap for a couple of reasons; it is dead neutral and *does* need a good tube preamp upstream imho. Secondly, Boulder amps should be left on 24/7 and kept warm, or they don't sound good. If kept on standby, still allow a couple of hours before doing any critical listening. I would say of the 800 series, the 865 integrated is the standout.