Do I need 10 gauge power cord if I have 10 gauge from panel?

I have been in this hobby since 1976. I have yet to hear a sonic difference between any power cords! I know enough about physics and engineering to question the veracity of the "golden ear" claims for the superiority of one power cord over another. 

@jumia : I understand the necessity of having low resistance in a power cord for transient peaks. Shunyata designed a device to measure this using transient speed compared to power in watts. They found that transient speed became a factor (slowed down) only when the 10,000 watt level through a power cord was reached! So below 10K watts a 14 gauge cord is perfectly fine! No deleterious effects!

My father's table saw would sometimes trip the 15amp panel circuit breaker when cutting plywood. I doubt your pair of 600 watt amps would do that even at clipping!

Shunyata's device showed that a typical 14 gauge power cord's resistance is perfectly adequate for any audio component. No effect upon transients!

@jumia 10-12awg depending on length should be more than appropriate for the job.