Caution: I bought an inexpensive refurbished 605 through the onkyo website. they were very helpful, friendly and prompt. It failed the first day. I guess that's why it was a refurb to begin with. Also, it was made in China, the 805 was made in Japan. Was it just bad luck? Probably, but I ended up spending the extra to get a new 605. Just like with the 805, never a problem. The 605 is not as powerful, nor is it as advanced, but for a small room with old cheap components, its fine. The refurb saves you over $400 and comes with a 30 day return policy and a full warranty. Either way, it's an amazing piece of equipment, and not just for the money, it's just amazing as a pre-pro or a receiver. I only wish I could turn off the amps, since I'm not using them. It would save electricity and eliminate the heat. By the way, the heat is not an issue in a well ventilated rack.