Sonus Faber - Stradivari - Amp and Pre

I currently have SF Cremona driven by a Classe CP-65 pre and a Levinson 432 amp. I am looking at the possibility of a pair of Stradivari. Any thoughts on how the Classe and Levinson would match with the Strads? I realize that this class of speaker normally would call for a higher end electronics, but the Strads are enough of a stretch. Upgrading electronics is probably not in the cards. Thoughts?