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

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

Shunyata - a "bona fide" high-end company - was attempting to prove that lower resistance was important. They proved it doesn't matter! So 'philes discard those garden hose power cords and free yourselves from delusional thinking!

@jasonbourne52 

X 200

Jumia, should have been more clear.

The gauge of wiring you _need_ to your amps is dependent on the fuse or breaker value on the amp itself.  14 gauge is enough for up to 15 Amps, 12 gauge for 20.   You _could_ get thicker wiring but not needed.  I personally like shielded cables over thick cables for the extra EMI/RFI protection.  Now that our homes are filled with wireless devices and Ethernet and USB cables I feel this is more important to me.

What about shielded and thick cables? Also it’s a 20 amp circuit breaker.

I am a big fan of shielded cables. Because it's nearly impossible two separate and space out all the cables in most rooms that have hifi equipment.

I thought correct Terminology was impedance for alternating current and for direct current its resistance.