It's amazing we got 2 pages of replies without someone recommending either a Lab12, Line Magnetic, or Leben.
The Lab12 Integre4 MK2 is as good as the review says and is my next amp purchase. IMO probably is the best amp purchase below $10K and even beyond. Very musical with no compromise in PRAT.
Leben CS600 is a stalwart and gives a perhaps a more romantic presentation. The waiting list for this is very long though unless you can get it used.