Another option is Audiogon has used multi channel adcoms all over the place for cheap prices and they would definitely be a step in the right direction since Klipsch are bright by nature and the higher powered adcoms are balanced sounding so they would not make them overly bright sounding. I have a friend in my home town that owns a pair of Klipsch reference and he runs a Yamaha receiver and thought he needed more power so I turned him on to a Adcom 5500 and he is happy as a lark with his setup and I know they made multi channel versions of the 5000 series amps that can be had cheaply as far as power amps go.