MRI grade vs Hospital grade electric outlets

Corrections:

Old stock HBL8300H Compact slim body? A very good duplex receptacle. Non nickel plated brass contacts with a non nickel plated supporting back strap.

Should read:
Old stock HBL8300H hosp grade Compact slim body? A very good duplex receptacle. Non nickel plated brass contacts with a non nickel plated "brass" supporting back strap.

The old style Hubbell HBL8300 standard body hosp grade outlet has nickel plated contacts and a nickel plated back strap for corrosion.

Should read:
The old style Hubbell HBL8300 hosp grade standard body outlet has nickel plated "brass" contacts and a nickel plated "brass" back strap for corrosion.

I got the BBL8300 WHI, looks nickel back strap.

Thats HBL8300WHI

@kavakat1,

Does it look this this?
https://picclick.com/Hubbell-HBL8300W-Duplex-Receptacle-NEMA-5-20R-125v-20-182320546258.html#&gi...
Note the tapped 6/32 square brass hub in the center of the outlet for mounting the duplex cover plate. Is yours square?

Looking at the side view of the outlet in the picture does it look like yours?

If so it should be an old series HBL8300 hospital grade duplex receptacle with a nickel plated brass back strap. You can find out for sure if you have a magnet. If it is nickel plated brass you should/might, (depending on the strength of the magnet), feel a slight pulling attraction to the magnet. If it is the newer style HBL8300 hospital grade outlet, that has a steel back strap, the magnet will stick like glue to the back strap.

.

Again here is the new style HBL8300 hospital grade with galvanized steel supporting back strap.
http://ecatalog.hubbell-wiring.com/productinformation/specsheets/3A/Live/PDF/HBL8300H_cart.pdf
Note the brass center 6/32 hub for supporting the duplex cover plate is round, not square.

ITS ELECTRICITY THAT COMES FROM AN OUTLET,NOT SOUND.
Contact pressure is the primary difference between good and bad outlets.
You can believe the hype,I'll put my money on more music buying, that's why I buy my equipment.