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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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.