I am an audio rookie trying to learn here. So i am thinking of buying ELAC Debut F5 floorstanding, C5 center and B5 bookshelf speakers. Their sensitivities are between 85 - 87 db. I have an old harmon kardon avr 144 and it outputs 30W/channel. SO i read that having an under powered amp can fry your speakers i was wondering if this harmon kardon is good enough? if not what kinds of speakers will my amp be able to power?