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? 
tattooedtrackman
Also when my electrician installed my dedicated 20a line for my amp and preamp he also installed a quad {4} outlet receptacle. Would this still be considered a dedicated line for my amp and preamp? 
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it looks to me like replacing a healthy tooth with nicer looking one. many celebrities do that.