I just recently purchased an Yamaha Aventage RX-A3010 so I could have 7.1 and still be able to "bi-amp" the fronts. However, I'm going to use the feature to connect four fronts. I currently own a pair of Monitor 60s and was wondering if the 70s would work ok with them. Since the 70s are bigger I thought maybe their volume may be out of sync. I'm guessing that the 70s take a bit more juice which might keep them at a lower volume level than the 60s. I haven't checked the manual yet but maybe I can adjust the volume for all four front channels.