Today I finally hooked up my Kappa 8's that i bought a month ago. My main System uses a Citation II amplifier and I know it will not drive these power hungry speakers, so I decided to try my Yamaha CR-2020, I use in my Basement workout room... Well I hooked them up and put some Eagles in the CD player and gave it a try. At low volume levels it sounded great but once you try to push them a little harder that just break up. The mid bass polygraph sounded horrible! and the receiver starts giving off lots of heat... Bottom line I will have to try to find me another amp to use in this setup. Thought I would post my little experiment....