I recently modded these for a customer, who loves them but is forced to sell them. The cheapest that you could normally get these is around $6150. At $4600 I am tempted to buy them myself to have back-ups for trade-shows, but the wife will not allow it....
These are simply the best sounding amps I have ever heard. My customers have compared them to Halcro, Audio Research, Boulder, Lamm and other more expensive amps, and they like them better as do I.
http://cls.audiogon.com/cgi-bin/cls.pl?ampstran&1126212103