Denon AVR-591 5.1 Channel Home Theater Receiver with HDMI 1.4a -$160

I bought this AVR from Amazon in 2011. I have been using it to drive my 5+1 audio system for the last 4 years without any issues. You can get more information about the receiver and do price comparison by visiting this Amazon page:

http://www.amazon.com/gp/product/B003H04Q8C?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

The actual receiver is in great condition, I wasn't able to spot any scratches. Unfortunately I lost the included Audyssey Microphone. You can buy a generic one from Amazon for $25 (shipping included) if you think you need one.