Amp for K-horns

[harri009]

Ok guys, my father just purchased a pair of '74 klipschhorns yesterday (105db sensitivity). The guy he bought them from had a stack of 2 on either side of the room and had a 100w SS amp ran to each of the 4 speakers. He convinced my dad that he needs 100w per channel. These speakers are among the most sensitive in existence. I keep trying to tell him to buy a 10 watt tube amp or something similar. If k-horns can't run off 10 watts nothing can so why would there be so many options for such low wattage amps. What would you suggest for him the best amp under $2000 for the k-horns?