Amp Recommendations for AZ Crescendo


I have a pair of Crescendos on their way to me and am seeking recommendations for a synergistic tube amp, especially for a larger room (18x30). I have a Modwright KWA 150SE, so am set with SS. Thanks.
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Wow another wonderful experience listening to the Crescendos. Steve the owner of Sounds Of Silence also explained what a gentleman Mr. Robert Lee is and how Mr. Lee make a bad situation right. This isn’t the place to go into details but if you call Steve he will gladly share. (It has nothing to do with AZ products).
I have the Crescendos too. I had them with Ayon Triton before. Now I am used a Luxman 550 AX 20 watts class A since I have an space 18x12 I have to listen low volumes but still what a great experience. Love this speakers best I ever listen too.
Regards to you all.
The Crescendo's are very efficient; I'm using a Vac 160i Integrated tube amp rated at 85 watts...
EJay-

both Modwright and Jeff Rowland are sonic matches for your speakers. What other gear, including cables/cords are in your system ? Happy Listening!
Anyone tried Crescendos with Nelson Pass's First Watt Amp?
I am considering mating them with either J2 or F6 amp instead of SET tube amps mentioned in the previous post.  
Your opinion is highly appreciated!!!