Weakest link in my system

No streaming ?  Your preamp way outdated , wires could use a upgrade for the monies Wire world Eclipse system cables , perrotta consulting 

gives good deals and a Major step up and a great deal .

@audioman58  My Preamp way outdated ?  Are u kidding me ? Nope. I will never stream. That’s not for me. 

“ Yes my room isn’t the best”

There is your answer

“ I definitely will be looking into room treatments.”

Bass traps. Start with REW measurements, get a really good handle on what’s going on from 100hz down and target your corrections with the appropriate bass traps. 

Your preamp is fine I thought it was a sp9

Cables are very low quality vs your system ,

thatswhy the WireworldEclipse system cables would ge aBig step up ,

also you need a quality line conditioner like a AQ Niagra 5000

and Thunder power cords a Huge step up !!