Noise Goblin

What are you running as far as gear?

Are you running a voltage maintainer, cleaner?

Are you running digital and analogue?

Are you running your modems and digital stuff on the same circuit, as your analogue stuff?

Does the noise vary, go up and down with the volume?

Does it change (yo yo) when you move cables?

These answers will help a lot?

You said "Hair dryer", maybe you need to look at that circuit also. The hair dryer, and where it's plugged in. Fix the outlet, and the dryer, do those things come with a ground on the plug? I think they do... FIX it...
Maybe the ground and common at the dryer plug have a contact issue, not good enough, or not at all? Back to the main see if the hair dryer circuit even has a ground..

Simple stuff, loose connections, because of the dryer being used on the same plug all the time.. Change the outlet to a HD 20 amp plug, a tighter plug for the appliance.

Happy hunting..

Regards

The audio circuit should be on the opposite leg in the box from any motors. Washer, fridge, garage door, hair dryer etc.
Common sense to replace all loose outlets.
A friend’s house almost burnt down caused by that Thursday.

Answers:
What are you running as far as gear? Odyssey Kismet stereo amp, Candela preamp, Suspiro phono

Are you running a voltage maintainer, cleaner? AudioQuest Niagara 3000

Are you running digital and analogue? Analogue

Are you running your modems and digital stuff on the same circuit, as your analogue stuff? NO

Does the noise vary, go up and down with the volume? YES

Does it change (yo yo) when you move cables? NO

You said "Hair dryer", maybe you need to look at that circuit also. The hair dryer, and where it's plugged in. Fix the outlet, and the dryer, do those things come with a ground on the plug? YES-grounded

OMG your system is not dead silent? You can hear a noise when you turn the volume up? Send it back its defective. Either that, or normal. All depends on how much you have to turn up the volume and how easy or hard it is to hear. If you crank the volume to the most you ever use and can just barely hear it from where you listen that is normal, or certainly nothing to complain about.

My system is way noisier than that. If I spent even half the time trying to track down and eliminate noise that I do working on making the signal better my system would be quieter, yes, but sound nowhere near as good. You have a turntable. Is that dead silent? Is there zero groove and surface noise? I don't think so. Big picture. How bad is it, really?

The electrical issue and the buzz that comes from my amp when the hair dryer is on upstairs is a mystery to me.  I am going to talk to my electrician again.

In regards to my turntable, when I have a record on but not playing and I turn up the volume up it gets louder-very noticeable. It also gets louder when I am playing a record.

When I am playing movies through 2 channel and I turn up the volume it remains dead quiet.  I have a little $99 Schitt DAC for this purpose.  I am purely analogue for music.