I'm lookng into possibly getting some Axiom M80's. I have a Sony STR DA7ES receiver.. I know the 80's are 4ohm but could I use my receiver without an external amp to power them or would my amp blow-up? I don't listen to extremely loud levels of movies/music. Just wondering. In the 5th review on this page the owner says he drives 4 ohm speakers with the Sony STR DA7ES receiver, for what it’s worth. http://www.audioreview.com/mfr/sony/a-v-receivers/str-da7es/PRD_140164_2718crx.aspx You could also try contacting Sony and see if they have an opinion on using it to drive 4 ohm speakers. Cheers, Dean