while the Kharma amps generated some interest at the Montreal show, only you can decide if they equal Lamms or others. (??I doubt??) You will likely have to get to GTT Audio to audition them.
A working pair of Tenor 75wi could be heaven with the Kharma speakers, although you may find the bass backbone somewhat lacking (compared to the Tenor hybrids)/ A used pair likely will be $9+K and you will really have to ensure that they are in good order. I know when I was looking for amps, there were some Tenor OTLs on the used market with questionable service records.
While Tenor is closed, the principal engineers are now providing service in Montreal for these amps through the store: Coup de foudre: www.cdfaudio.com So you are not out of luck, if you want to go this route !As well, it has been suggested to me that other service departments can service the OTL's, aside from cdf, although you will have to research closely.
Personally, when I auditioned Kharma speakers, I preferred tubed or hybrid equipment instead of 100% SS equipment. On the other hand, I never heard the Dartzeel, Edge, Rowland, or Pass amps with Kharmas but I have read others highly recommend these with Kharma speakers on this site.