Summary: I used to have a Yamaha 5.1 receiver that worked for about 10 years and still working. I replaced it with RX-V575-R because of the newer technologies in modern receivers. I got this unit as a refurb which was substantially cheaper than the new. The only thing I didn't like about this purchase was the packaging of the unit when I received it. It was in a big box with barely any packaging material in it; probably shaking and moving inside the box all along the transit.
Summary: I have been using this and the RX-V475 for about 4 months now on a daily basis and like them both. I bought the 475 first for about $200 reconditioned and thought it was such a deal that I bought the 575 twin which I use to drive both indoor and outdoor speakers. Both work the same except for the added speaker zone on the 575. Pros Great app for controlling these devices. Initially had trouble with it but upgrades to the app and receiver seem to make it more stable.
Summary: Very nice set of features for a reasonable price. Hooked up Samsung 50" HD TV using HDMI cable, automatically syncs the sound perfectly. Very intelligently made, nice looking, fits the small space available in the TV console perfectly. I can also sync up with my iPad via Airplay and play music right from the iPad.
Pros: Clear Sound, Easy To Set Up, Interfaces Well With TV, Lots of inputs, Supports Airplay
Summary: I bought this to replace an older (but not THAT old) Onkyo whose HDMI board had died (apparently common for the newer Onkyo receivers). I got a great price on a refurbished unit. This unit exhibits typical Yamaha quality and features and I really like it. It is the heart of my fairly elaborate home entertainment system and I really like being able to plug in a 32GIG USB drive and play music.
Summary: Overall very happy with the purchase. If I were to do it again, I would have upgraded to the one with two true zones instead of shared. I installed speakers out on the patio and in the living room, so it's nice being able to turn one zone on and the other off or vice versa, but you're forced to use the same input and it's difficult to put them on separate volumes.
Summary: My only dissapointment with this product is that Zones A/B can't handle different inputs. It's not clearly stated on the website and the manual, found that limitation on a web review. And that was what I was looking for on a two zone receiver. Maybe it's my fault, or maybe not. Everything else great product, sound, interface, and the av controller app is a killer feature, thumbs up on that one.
Pros: Clear Sound, Easy To Set Up, Energy Efficient