Brady - congrats on the Denon and a belated Happy B-day.

A note on Dakmart and ecost. Prices are great for the refurbs and I have purchased 5 Denon models over the years without issues. I lean towards Dakmart because they provide a 1 year warranty vs. 90 days for ecost.

Denon's are great units, but the manuals can be challenging. Let me suggest you check in at Batpig's site. He has WAY too much info on the nuances and vagaries of setting up Denon receivers, including a pretty extensive set up guide. Really worth looking at.

Also, I have a Denon 3808 (follow-on to a 3803) and a 1909 (follow-on to an 1803). I have taken the time over the years to make some pretty extensive notes that might be helpful to you. Lots of little problem solving snippets. Drop me a PM with your email address if you are interested.