+1000 on that. I still have the DR-25 amp and DR-6 preamp I bought new in 89/90. They have been rotated in and out of my system often since, pinch hit for broken down Krells and such, and always show their musical beauty (and muscle) at every opportunity. Not a second’s trouble from either. Recently picked up a DR-9 (Dave Reich’s first AB design with a "paultry" 100w/ch @ 8ohm rating) and it is the best sounding amplifier I have tried in 20+ years with my "amp killer" Thiels.
Dave