I drive my 3.6's with an Audio Research VT200 (200 w/ch) tube amp with the autoformers so the amp sees an 8 ohm load. I like how it sounds, the autoformers took a while to break in but are well worth it. When I use my D400 MKII I do not use the autoformers, the amp is solid state and will deliver more power (400s/ch)into 4 ohms than the VT200 will. The tubes sound the best.
There is a VT200 on Audiogon for $2995 with new tubes, a pretty good deal. Good luck.
There is a VT200 on Audiogon for $2995 with new tubes, a pretty good deal. Good luck.