What was the first power cable that you noticed a difference in the sound?


I have bought six or seven different power cords, none over $500 and have noticed little or no change in the sound of my system. All the cables are 12 gauge or bigger.  Without talking about cables made with unobtainium, where did you start hear a difference.
 

Thanks.

128x128curiousjim

@drbb ,

This has been answered a few times by way of the following:

Most if not all who purchase the big dollar gear are going to use an aftermarket cable of their choice, the big dollar gear manufacturers know this, so they provide what is essentially a throw away cable.

Now, why provide a cable at all is another question...

More than one high end electronics manufacturer has said they know most customers will buy the power cord of their choice, so no reason to add cost by including an expensive cord. Though some manufacturers like Pass and Rowland do include a "good" power cord (for their customers who will not buy an aftermarket cord, beats including a junk cord)...though they certainly use expensive cords at audio shows, and many seem to have a preferred brand...

@lcherepkai  I agree with your final comment "why don't you simply experiment, and listen", however I feel much of your post is apples/oranges re the OP's question.  The majority of your post talks about "signals" and how they are affected by various cables.  I think of a signal as carrying information.  The signal from my DAC to my Pre may very well be enhanced by the choice of cable, but the question about PC's is completely different?  Now we are talking about the pure transmission of electricity, prior to interacting with any signals, or for that matter, any of the alterations to that electricity once it enters the amp.  Don't mean to nit pick but...... I think the two things are separate discussions.  IMHO  Cheers.