Smiley123 :
I am confused? I thought a 3.5mm was the same as an auxiilary connection, Is that correct?
Correct.
Where did you read you can hookup banana plug to aux? My first reply I said you can't.
Am so sorry, u obvious don't know what am talking about.
Attempted to look for the Denon manual, then I can show you but I can't find. So all I can do is, repeat what I replied last with a slightly different way, in fact telling you exactly how this should work:
DO NO hook up Denon Banana to Bose.
Do hookup Denon, look for a pairs of jacks labeled, LINE OUT, PRE-OUT, or REC OUT, then buy a cable like
THIS.