Power cord? Why?

S23chang...Voltage drop aside (because that depends on how long the wire is) 12 gage wire is acceptable (building codewise) for circuits that draw 20 amps CONTINIOUSLY. This is based on the wire not getting too hot. It will actually carry much higher current, and even the 20 amp fuse or breaker that the 12 gage wire is supposed to have will carry 30 amps for quite a few seconds...and longer if it is a slow-blow or time delay type.

S23chang, I don't know about all the EE stuff, but higher and lower gauge cables do sound different and has different effects on different types of component ie digital front end and amps.

One anomaly I found is I like higher gauge on digital and modest gauge on amps.

Thank you Sean. I guess there is no point for me to change from 12 to 10 since I don't really have a dedicated line for my stereo system. The power cord I need is only less than 3 ft long anyway. Like what I observed from 14 to 12, there probably will not be much difference from 12 to 10 in this case.

Sean - what I heard from Roger (via my dealer) is that he is concerned about the capacitance of the speaker cable resonating with the transformer windings of the speaker. I don't believe he is concerned much about the amp oscillating. I believe Roger has a treatise about this on his website.

Corona, I agree with you completely. My brother is a metallurgical engineer with 25 years experience. He has taught me a lot about this. This is why the wire needs to be fabricated properly and handled carefully in the assembly process. This is how my "Perfect Crystal" stays perfect.