Which amplifier

I own Mac amp and pre, but damn that Accuphase kit is pretty! 

@andu Voice of reason!

If you're considering integrated amplifiers in this range, the McIntosh MA8000 is a standout. It delivers 300W per channel, ensuring ample headroom for most speakers. Its built-in DAC and phono stage add versatility, and the signature McIntosh sound—warm, detailed, and engaging—makes it a compelling choice. While the Accuphase E-470 is also excellent, the MA8000's combination of power and features might align better with your needs. If you have the opportunity, auditioning both could provide clarity.

Cornwalls don’t need anything near that kind of power.  In fact, just the opposite it true.   If you really want to make them really sing like you never heard before, try a low powered SET amp on them like a 2A3, 45, or 300B amp or a Derek Sanderson Fleawatt and watch out!