Grounding questions

I have a quote for a new Siemens box. It’s way out of my budget and comfort zone. I’ve been in the home for 24 years with no electrical issues. There is a new supplemental box installed when I had a bathroom reno in 2014. It runs the sump pump in addition to the bathroom circuits. 

There is no equipment ground. That is because I tried grounds and it made no difference.

The Furman does not have this indicator.

I don’t have an answer about the ground. I assume when they ran the new lines they just tapped into the existing fuse box. Aging a ground to that was not part of the contract. That is why I am now considering having a ground added.

yes I have a basic multimeter. 

Yes a very good electrician told me it’s not grounded. There is a TV but no cable box. I stream. 

FYI the hum existed before the electrician installed the dedicated line. Im

not home to look at the receptical at this time. 

Thank you. I don’t remember if I used a cheater prior to the dedicated outlets which by the way are not GFCI. I isolated the power amp and there is hum from both speakers. When I plug it directly into the wall, there is hum from both speakers but the frequency seems a little different. 

Then I did use a cheater. Yes the outlet is same as the Amazon link in your last post.