Pass Labs Power Cord

Armandito, I have tried Shunyata Taipan Helix Alpha and Audience on my X250.5

I don't know how your X350 responds to power cords, but my X250.5 shows a very slight difference between a $6 Volex cord and a Shunyata or Audience. The sonic difference is such that it is definitely not worth the price difference.
I ended up with Audience powerChord on this amplifier now(I already had it at the time), and Shunyata Taipan Helix Alpha on my ARC LS25 tube preamp and this is where it makes most sense in my system. But I could easily live with a stock cord on the amp as well. You get a slight improvement with Audience or Shunyata mostly in high frequencies where with aftermarket cords it sound a bit more even throughout that spectrum, but again, it takes some time to listen and notice.

Joey54, I also heard positive things about ESP Essence Reference on Pass Labs amplifiers. I was planning on trying this cord but never got to it. How would you describe the difference between the stock cord and ESP? Thanks

Tvad, I'd be surprised if Volex sounds like Dominus. It definitely should not, considering the price difference. But then again, if there is a difference, is it worth the price of admission? That's for you to decide. However, please do let us know what differences you have observed, once you're done comparing the cords.

Tvad, thanks.
In my system the results were similar. On CDP and preamp, aftermarket power cords are more beneficial in my system. But I still do want to try that ESP Essence Reference.