My speakers are 88/6ohms, 91/4ohms and 89/6ohms respectively (L/R, C, Surr). It does take some power to get them going. When listening to some CDs today via my DVD player (CD player is on the fritz) and its optical output, I was able to get some pretty significant volume levels... but playing music videos on some of the DVDs I have, even pushed to the max, I couldn't get that bleeding edge I was looking for. My choice in speakers is definitely going to be a factor in my receiver purchase when power comes into play... and all I can do is listen to them and pick what works best for my setup.