One of my friends own the R11 towers and powers them with just his Yamaha RX-A4A. He absolutely loves it.\n\nI love my Yamaha RX-A3080.\n\nDon't get me wrong I love my 3080 and have spent hrs with REW and YPAO tuning and tuning. Sometimes I get the upgrade bug and in search of better more fuller sound. Thinking that a pre\/pro might deliver that with different room correction. As far as research thats why I'm here asking questions. The old days of demo rooms are pretty much gone at least around my area. Even so what sounds great in a demo room might not in our home space.