I've heard them with a Yamaha receiver. They seemed good and especially detailed for the price, but overly bright for my ears. The pairing with Yamaha probably accentuated the bright characteristic. Unfortunately, I wasn't able to listen to them with an H/K receiver, but my guess is that they would match better with the H/K than the Yamaha.
Thanks for the reply I thought they sounded a little bright to, but maybee they were not broke in yet. I heard them with a h/k 320, maybee I'm not use to there highly detailed sound.