Denon AVR 900 Receiver Stereo Receiver. Unit was tested and it works. Unit was tested by attaching speakers and plugging component into one of the inputs, all inputs were not checked. 

I don't have the manual but I couldn't figure out how to adjust the sources. When I pressed the function buttons it did not change them like I expected.

See my feedback, I pack and ship very carefully to ensure that your item will arrive safely in the condition advertised!