MRI grade vs Hospital grade electric outlets


I know both have been suggested as an upgrade to the run of the mill cheap outlets. I also know there may be "even better" outlets.   I know the MRI grade has non magnetic metal components. Bottom line, does it make a difference one can hear? I have about 1/2 dozen Hubbell 30 Watt hospital grade outlets. Got them fairly inexpensively. Are the MRI grade worth the extra $$$?
kavakat1
The MRI outlets will not be any better than the Hubbel outlets.  Most likely they will be made from the same type of brass material.  Hospital equipment has a much different set of requirements than audio electronics.  My suggestion would be to use your existing Hubbel outlets for now.  Maybe move up to the cryoed Porter Ports if you feel the need.  Above that, it gets very expensive with Furutech,and other brand when looking at gold/rhodium plated copper or phosphor bronze.
I'm not sure why you'd want to use 30A outlets. They would require using a plug not compatible with 15A/20A outlets without gaining any particular advantage.
Cleeds:

You are correct. It was my mistake. I am using 20 amp Hubbells. You have an eagle eye.
@kavakat1,

As for the Hubbell hosp grade outlets, what model/series?

Old stock HBL8300H Compact slim body? A very good duplex receptacle. Non nickel plated brass contacts with a non nickel plated supporting back strap.
Example in brown:
https://www.zoro.com/hubbell-wiring-device-kellems-receptacle-duplex-20a-5-20r-125v-brown-hbl8300h/i...

The old style Hubbell HBL8300 standard body hosp grade outlet has nickel plated contacts and a nickel plated back strap for corrosion. The nickel plating has ferrous materials in the nickel. Ferrous material can and do affect the SQ of a sound system.

Avoid any outlet that has a galvanized steel supporting back strap. Bad for the SQ of an audio system.

Watch out for newer Hubbell 8300 hosp grade outlets. The back strap is made from nickel plated steel. Garbage for audio.
http://ecatalog.hubbell-wiring.com/productinformation/specsheets/3A/Live/PDF/HBL8300H_cart.pdf

To check for steel or ferrous materials use a strong magnet.

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