Best amp for kappa 8.1

Will either push less than a 1 ohm load? Infinity K 8.1, 9.0, 9.1, were ALL known to be amp killers. 

There are XO fixes.

The other option, just make sure, what ever you use, will hold up.. I've worked on a lot and owned a LOT of the RS and Kappas. They can really sound great...The Kappas do require a lot of power to get the BASS that they can really offer up.. I'd start at, 5-700 watts @ 4 ohm...

A good class d would run them perfect... Just an Idea?

Regards

Between the two, the Aragon is the better amp--the Acurus was a step below it in the same company's line.  However, not sure it can handle a one ohm load.

I looked up the specs on the amps you mentioned..

I don't think you'll be happy. They both have pretty good specs.

BUT. It use to take something like Krells, Mark L, Pass Lab, Ampzilla, Adcom 565s, modded, 5800.

I also saw, a guy go threw 2 pairs of Gen 1 Emotiva. Denied the warranty on the second pair. LOL chewed them up and spit them out with Kappa 9.0. 10-12 years ago.. I tried to tell him... XLR? I think, you could run mono, and get 1000 watts or so..

With good (right) amps, those speakers will surprise you...

Regards

     I agree with oldhvymec, a good class D would run them perfect.  Either of these pairs of D-Sonic monoblocks would be a good choice and work well:

https://www.d-sonic.com/product-category/mono/

Plenty of power, reasonably priced, excellent sound quality, stable down to 1 ohm and free in-home trial periods.

Best wishes,
    Tim