Sonus Faber - Stradivari - Amp and Pre

Think you are putting the cart before the horse.
If upgrading the amp & pre is not in the cards - What will you do if the mix is wrong?
Your amp certainly has enough power, but I would suggest a tubed pre for warmth.
On the other hand - If you're happy with the sound of the amp/pre combo with the Cremora's - It might just work.
The Strad's are a very special speaker & the better you feed it - The better it will sound.

I like my Classe and Levinson with the Cremona very much. I am willing to change, but probably not to double the price, at least not at this time. I realize that is not optimal, but sometimes you need to move in steps. The Levinson certainly has the power, the question is whether it has the finesse and speed for the Strads. I am sure it would be a compromise, but if I can get 90% of the Strads capability, it may be OK for now.I will stay with solid state, even even though a tubed pre would be very nice. When I have heard the Strads it has been with Nagra gear. Unfortunately, there are not Strad dealers in New England (Boston). When you went to SS, what amp/pre combos did you try?

I would not consider the levinson 400 series fast amps. In fact, it is one of the reasons I did not go ahead and purchase a pair of 436s. On the other hand, the 532 (not the H series) is a much faster amp.