What amplifiers/integrateds do you like with Cornwall IVs?

I didn’t try it with my CW IV, but I did try the Cary SLI-80 with my klipschorns. That was one of the most disappointing amps I have ever heard. And I didn’t much care for the SLP-98 preamp 20 years ago either.

The Decware mention is a good one. I had a Torii II and it was a good match with horns.

One last point. You don’t need two different amps for different music with the cornwalls.  One good tube amp will do everything. 
Oz

First of all, there is no such thing as too much power even with the Cornwalls. Having said that and Atma Sphere S 30 will drive them handsomely. I would prefer the M60's which would really rock. They are Class A amps (the best) and avoid transformers which introduce a whole set of problems. They are also beautifully hand made. IMHO they are the best tube amps made and I am seriously considering a pair for myself. 

I might consider an Audio Note EL34 kit.  Loads of quality parts, single pair of el34 tubes, from what I have read quiet as a graveyard. Bet it would be a great match and a blast to build if you enjoy that type of thing.  They occasionally have sales to boot

https://ankaudiokits.com/2/EL34-IE-Core-C-Core-Integrated-Power-Amplifier.html

Update--

So 30 hours of straight play from the Music Hall Class A Mambo, and I swapped in the Primaluna HP Integrated, running KT 150s and reissue Gold Lion 12au7s (I have enough NOS 12au7s to last 100 years, and I think these are almost comparable to NOS, almost).  

Holy cannoli!  This is nuts how holographic and gorgeous this sounds.  

Um, two words-- "Classical Music!"  ---I hear it like never before.  These speakers could be a doorway to and place within the genre for me.