Cy, I have the Denon 2805 which is about a 1.5yrs old. My room is 30ft x 30ft and it has no problems driving my 7.1 system. The 2807 is newer, so you would have no issues.

Also, wherever you buy it, make sure you purchase from a reputible local retailer or online etailer, otherwise, the warranty may not apply.

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