Not too familiar w/ Khoruses, but I have Hawks. If they are at all similar (and I don't know whether they are or not), I found the Pass Aleph 3 to be one of the best amps to match with this speaker. It's shortcoming, of course, is its low power. The Hawks like a lot of power. Given that the 2.5 is supposed to be somewhat aleph like during its first fwe watts, and then has a lot of power beyond, I would think it would be a good match.
There ae a lot of IFs there, I know, but it's the best I can do.