Dedicated 20 Amp Line for Audio

He needs 14/2 for 15 amp, 12/2 for 20 amp. He does not need 12/3...that includes 3 conductors, one of which is red. Both 14/2 and 12/2 contain the ground, it is not counted in the number designation. Keep it at one circuit run to avoid ground issues/loops etc. To assist in noise, buy at least an audioquest Niagara 1200. I’d also buy the audioquest Edison outlet or a furutech, beryllium-copper. I would top that off with a Fuutech faceplate designed to block rf signal interference...I also run a seperate furman power conditioner for all my low draw stuff. Only power hungry components are on the niagara...this also frees up plug space. Both of course are plugged into the Edison outlet. Don’t forget the power chords to complete this....I use AQ thunder, Z3, and X3 throughout. Also a Nordost blue heaven on my Technics TT.

I have GoldenEar Triton Reference powered speakers. 1800 watts each (15 amps). I installed a 3 gang duplex receptacle with 3 separate 20 amp circuits to my panel. Separate power and neutrals, one common #10 ground. Plenty of power, No ground loop issues.

@millercarbon 

Thanks for sharing the Fremer video...unlike some others here, I thoroughly enjoyed it....

As my Audiophile friend electrician stated ,and Proved that a 4 wire ,

dual ground is very important one common ,the other a insulated isolated ground 

and preferred awg 11 or 10 li have awg10 Copper , even lower resistance 

and I use Pangea top gold Copper outlets, not a big name brand but very well built.

and less then $100 each.