The classic would be MacIntosh… a massive 1,000 wpc amp. It is the muscle/ muscle combination that many folks buying those speakers go for. A Pass 350.8 would be more detailed. If I had them I would do an Audio Research Reference preamp and a pass 350.8.
This is the kind of equipment that will get the best out of these speakers. If you will be slowly growing into them. I would recommend used Audio Research preamp and a used Pass amp… as high powered and as contemporary as possible.