Preamp connections on my reciever

[QueenCashew]

I have a Denon AVR-786, and I did not buy it new so please be patient with me. I see where my powered subwoofer hooks up on the back, but I am just wondering if the rest of the hook ups there in the same general area are also pre amp connections.

 

[americanaudiophile]

Yes they are.
If you wanted to add better and or more powerful amps that would be the place to connect them.
Here the manual in case you don't have it
https://www.manualslib.com/manual/38380/Denon-Avr-786.html