Help - Opinions - Amp for Sonas Faber Olympica III Speakers

 The Olympica III are very nice speakers. At 90db they don't really need a ton of power.  I know you have a very large room. For solid state my choice would be an amp from Pass Labs. Maybe something like the X150.8

I have the Elipsa SE and drive them with an Audio Research Ref 110 tube amp. I have heard mine driven by the XA60.8 mono blocks and it was an excellent pairing. They really benefit from high quality power.

If you want to go with NAD, I'd seriously consider the purifi equipped model instead (C something).Other low-cost alternatives are ATC's amps, and mid-range musical fidelity models.
Of course, the Pass labs mentioned above are excellent IMO (but more expensive)

I went with a Classe Sigma Amp2.Class D with 200W 8 ohms, 400W 4 ohms.
Got it for $1553.00 shipped. I was told Classe was bought out and the new company was selling off old stock.
For that price worth a try.
Thanks for the input.