I love the combination of Quicksilver amps with Klipsch. I have had many variations on that combination and none have failed to disappoint. Currently running Quicksilver amps with LaScala's at home and with Heresy's at work. You could easily drive the Cornwall's with Quicksilver's MiniMite amps. Swap the tubes out to KT88's and good 12AX7's and you'll have a magical combination for not a lot of $. You may also want to list your other components (pre-amp and front end) as well as the size of the room, and perhaps your musical preferences so others may have a better idea of what to recommend. I'm assuming you are looking for an amp recommendation, not an integrated amp(?). Quicksilver & Klipsch will NOT dissappoint in my experience.
Best,
Marco
Best,
Marco