Replacing generic RECEPTACLES


How important is it to replace your generic receptacles with audio grade receptacles . I already replaced my stock power cords to high end Shunyatas. Would it still be necessary to still change my generic receptacles to audio grade? 
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@elizabeth ........ Sounds like you have a good plan going on.. I am still burning in my first of my 3 Furutech GTX D-Rhodium duplex on my Ref line. Top and bottom each 15 days burn in time. I have about another week left for the first on to be burned in and then i will move to the 2nd. And then the 3rd . 3 months total for the 3. Then i will install one with the Oyaide carbon fiber cover and the other 2 with the WPZ -Z 2 dual duplex Oyaide carbon fiber . I will be using one with my Rega Isis cdp and my other 2 with my ARC Ref 6 And Krell FPB 600. That will be on the duplex.  
I've always done a Google search to locate the least expensive place to purchase my Furutech outlets from, seems like the best price and place to purchase from always changes over time.
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Elizabeth, I don't blame you.
I've been able to find good prices from some Audio stores that are very legitimate in Japan. The only drawback is the long wait for shipment.
If one doesn't want the wait time and is afraid of a fake item I suppose for peace of mind one can pay top dollar and buy from a trusted store in the good old USA :-)