STREAMER

I’m using a U1 mini and have been experimenting with different power cables. I can definitely hear a difference with my AQ NRG Z3 on the U1. More defined soundstage, tighter bass. I only wish I had more AQ plugs to try on my DAC and Amplifier. The difference was enough to make me a believer in power supplies so my U1 is currently out getting the SBooster upgrade. 

Larger power cables are most important on an amp but I run 12 awg to all my components.  cheap insurance.

Jerry

@jasbirnandra

you might want to edit your original question to ask will a power cord make an improvement.

It is surprising, how often folks around here, conflate “different“ with “better“ and “cost“ with “quality”.

I would definitely use one.

For a U1 mini or U2 mini, an external linear power supply is probably a more cost efficient first step. I had a T2 with an SBooster, and for me, it was a significant improvement.  

To the original question, yes a PC can certainly make a difference you can hear. It's up to you to figure out which one floats your boat at a price you can live with.

I would suggest the lending program from thecablecompany.com. For a reasonable fee, you can demo multiple cables and decide for yourself. If you choose to buy, your rental fee applies to the purchase. If you don't hear an improvement at a price you're willing to pay, you're out only the rental fee.

I've been down both paths, and currently have an X1 with an aftermarket PC.