Good evening everyone. I do own the Klipsch Rp-280. The Specs reads Nominal Output Power 150 and Max (RMS) output Power 600. I am currently powering them up with Emotiva UPA-500 (80watts Channel). The sensitivity ratio is 98db which everyone knows how efficient Klipsch speakers are. My question is do I need a more wattage Amp or I will be ok with the Emo. I do listen loud when I'm paying music without a Sub on.