Well don't get discouraged. The others are right but you can have tube amps with your Klipsch and still have a decent noise floor without too much difficulty. My neighbor has LaScalas that are even more sensitive than your Cornwalls and we haven't had that many problems finding tube amps (and tubes) that are quiet enough.
Keep in mind though that some amps just inherently have a high noise floor, so you may not be able to save all of them with quiet tubes. I had a Rogue Magnum 99 for a while and it was pretty noisy, even with my 91dB sensitive speakers....
You made a great choice of speakers though! You have the potential of higher resolution than the majority of other stereo systems with those Cornwalls. Get them right and they'll knock your socks off.
Arthur
Keep in mind though that some amps just inherently have a high noise floor, so you may not be able to save all of them with quiet tubes. I had a Rogue Magnum 99 for a while and it was pretty noisy, even with my 91dB sensitive speakers....
You made a great choice of speakers though! You have the potential of higher resolution than the majority of other stereo systems with those Cornwalls. Get them right and they'll knock your socks off.
Arthur