Power cord recommendation for a dac?

I think the powercord is a waste of money. just change the volts of the amp and the preamp from 115 from 230. (this would be money well spent). In my experience that will be the ultimate in performance, with better transient response and detail. Voltage affects freq response...

Under $500 I would go with used Silent Source Signature.

I have never failed to hear a difference with any wire -- power cords, interconnects, speaker, digital -- that I changed in any system I owned. Sometimes that difference was subtle, more often it was the indisputable. All my audiophile friends agree on the charterization of these differences. On the other hand, in my 75 years on the planet, I have met many people with tin ears and many people and closed minds. Nonetheless, I suppose there are systems that are impervious to such changes, although I have yet to encounter any.

Please, if you don't have a specific recommendation, find another thread in which indulge yourself.

If this conversation were done in real time, all you'd have to do is tell them, to their face, to butt out. And they'd walk away.

In this venue, they have the power of anonymity and the ability to be rude and keep on posting, much to their delight. They won't stop.

All the best,
Nonoise