AV Receiver Upgraded


Hello:
I have a Denon AVR-4603  Surround Sound Receiver for the past 13 years,  and it is still working fine, no issue at all. But the question is: 
Why should I upgrade to a new AV receiver such as Denon 4700 or Marantz SR6015, what am I getting? Why would you upgrade?
And Yes I do have the Sony 77" OLED TV.

Mando..
almandog

Showing 1 response by elliottbnewcombjr

Looks to be an awesome unit, highly respected sound quality, the cons were only about it's complexity, which I have to assume you have mastered.

I would only think about the speakers, fully satisfied? or some improvement possible?

After 13 years, I would disconnect everything, clean all jacks, connectors, back together, there is the potential to recapture ____?