Rhodium plated audio grade wall socket

@cainullah - Take a look at this link on electrical conductivity of metals

Electrical Conductivity

You will see what metals conduct the best. Rhodium is way down the list and is used only because it is hard wearing and it looks nice and shiney

However - it’s very hard to get the metals with the best conductivity into an outlet - not to mention very expensive.

I have found that Hospital grade outlets have a tendancy to "clamp" more effectively than a standard outlet and for a more reasonable cost than the unit you have posted

Unfortunately you have posted a picture of a UK outlet, which I am not too familiar with.

But you could try something like this unit...

RED COLOR 13 AMP UK BRITISH OUTLET, SOCKET, 13 AMPERE, 13A, BS 1363 A, UK, MK, ASTA, BSI, BRITISH, BS 1363, CE IEC TYPE G (internationalconfig.com)

In combination with one of these silver plated plugs...

UK Mains Plugs | HIFICollective

I think they might be more effective.

Regards - Steve

Thanks @steakster .

They also do the same socket in Brass De-oxited, Silver or Gold plated. 

Any thoughts? Or should I just get a normal plug socket.

In a well balanced system rhodium is perfect and very refined. Tend to agree with @steakster ​​​​. 

For me base material is very crucial.