Do powercords make a difference in sound?

Listen with the stock power cords in place to determine a base line performance of your system. Get a feel for the sound of your system first. I would say you should spend at least 1 or 2 months. Then try inexpensive aftermarket cords preferably those you can try on a 30 day money back. Compare the sound of your system with a new cord (one at at time) and see how the sound compares with all stock cords. Common wisdom says to put the highest quality cord on your source, so you may want to start there. Cords make a difference, but it is not always a "good difference." Finding synergy with power cords gets tedious. In the end, you may end up liking the sound of your system better with the stock cords. It's not unheard of. Also, your system needs to be resolving enough or you may not be able to hear any change from one cord change to another.

My experience is some aftermarkets do ,some don't

I never give the standard slap down of " search the archives", but I'm tempted to here. This thread is just the latest in a long line of incendiary conversations about power cords. Though I'm sure you're hopeful, I am certain you will not uncover any opinion that's not been expressed before, ad nauseum.

Danlib1 said it all..."Amen brother".

There is no cable that makes as much difference as the power cord.....