Unswitched sockets


I am planning to upgrade my hifi supply and to change some of the sockets dedicated to my hi-fi to unswitched sockets (i.e. on all the time)

 I was also offered the chance to buy an unswitched socket complete with an earth grounding (I am guessing to connect to turntable - this doesn’t have earth plug) do you think this would be worth the extra money (only about £10more)
128x128richdirector
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Yes there is an earth connection inside the (room circuit)  wire loom which connects to earth 
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Ok perfect - so well explained - that makes complete sense now. 
Was just thinking of times before where I suddenly heard improvement where I hadn’t realised there was a deficiency and thought this might be one of
those issues. But system seems good - will report back if any different.