20 ampere power cords.

I installed two dedicated 20 ampere electric lines and outlets for my amplifier.
Would it make much difference in sonic quality between 15 and 20 amp PC for amplifier in this situation ?
If so, any recommendations on 20 ampere PC for Quicksilver M135 monoblock ?
The only difference is the configuration of the IEC plug. The 20 amp style is different than the 15 amp and are not interchangeable. The type of cable is determined by your amp and not your circuit.