Here’s a different perspective: consider what you want out of a power cord. Do you want it to look pretty or serve an active role in reducing transient noise? Every half-decent product has filter chokes and bypass capacitors immediately after the power inlet. These present a low impedance to the undesired high frequency noise. So, with this being a low impedance, we will not drop much of the noise amplitude on the doorstep of the power supply _if_ we have a relatively high impedance elsewhere upstream (ie: the power cord) to drop the majority of the noise. Remember, the noise is energy, and we can’t create or destroy energy, but we can move it around. My point is that a 12AWG power cord will not present a significantly high enough impedance relative to the input noise filter of the amplifier. That is the irony of ultra large gauge power cords. They look nice, but they are a detriment to noise filtering. Also consider your load is 130 watts, which is just under 1.1 amps at 120 volts. Even a common 18AWG power cord will have oodles more ampacity than you could ever need. Stick with the existing cords unless you are just looking to burn money.
