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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Just found a Carbon Fiber / Aluminum base , double face plate for 4 from Oyaide (WPC-Z2} from VH AUDIO. $374.99  And the single (WPC-Z) $239.99......Good thing i only need 1 and 1....
I own apartments, and sometimes have Section 8 tenants! When I have an inspection, the inspector uses a classic polarity tester to twist and wrench each outlet. If he tester flickers at all (continuity break) I have to replace it! (If they weren’t shot before they test them they definitely are afterwards.) Now I just replace them all.
And yes, you can replace a 15 amp outlet with 20 amp one. It makes thing safer! I often do it to “high stress” areas such as kitchen counters!
tomfoolery...... Thats what i would have done if i already had a 15A dedicated line. Since i do not , I will just put a 20A dedicated line in for my CDP and the 20A Furutech. 
tomfoolery
And yes, you can replace a 15 amp outlet with 20 amp one. It makes thing safer!
You can replace a 15A outlet with a 20A outlet provided the wire connecting  the outlet to the panel is of the gauge specified under the NEC and your local code for a 20A circuit. Otherwise, you have a code violation and a definite safety hazard. And there is nothing inherently "safer" about a 20A line compared to a 15A line. If they are each properly installed, they are of equal safety.