I just placed an Amazon order for 2 rf-7iis after hearing a pair in my sons university common room. but I may be in trouble because of my lack of understanding on power levels. My own research has not answered the questions as all forums read, say different things. I just recently purchased an Onkyo TX-NR555 AVR recently and I don't know if this receiver will be enough to power these speakers. the receivers power rating is 140W/(6ohms) 80W/ch (8ohms) I don't know what that means exactly. I do listen loud sometimes but not ear bleeding levels. Replacing the receiver or purchasing an amp is not in the budget right now after buying these speakers. Help please.. I sold my beloved vintage JBL L65 Jubals to buy these. Will this receiver power these on a 2.1 setup? at least temporarily until I can afford to upgrade to a better receiver with higher power ratings? I don't want to under power and damage these speakers.. thanks for your help.