@vthokie83 Thank You for the request.
Typically Swapping out Wall Socket Connectors and IEC's on a Cable is reasonably straight forward.
A Multimeter will enable continuity testing of Wires once terminated.
The last time I produced a Cable I discarded the Spades, as I was having continuity issues, when terminating.
As for Metal used in a Plug Connector, Pure Copper without Plating is the preferred, but that is based on Copper Wire > Copper Terminations. I have not Annaly been checking Brass with a Coating or Copper with a Coating, so am not able to comment.
My experiences to date is that Digital and SS will benefit the most, in relation to discernable changes to the end sound being discovered and 50+ Hours of usage will have a different Cable in use that one with a few hours.
If a device with little value has an IEC, this can be used to assist with increasing the hours of usage.
Not to sell you short and also a method that might need for you to Talk to a Electrician or a Forum Member with savvy.
The connectors in the link are Pure Copper and removes contact pins in the routing of Power Cables into Plug Sockets.
This is the method I am at present most likely to adopt.
I am at present working my way through the issues and alternative options where there will be removal of Fuses.
I take professional guidance on all Matters Electrical and Electronical.