power cord for pass 250.8

I use Transparent Audio Reference for my Xa100.8s.  

This is the current best value in power cables. Don't dismiss it because it's chinese; they make absolutely stupendous cables at very affordable prices. Yes it's a lot of money, but it's PURE SILVER.

https://nl.aliexpress.com/item/1005006205342779.html?spm=a2g0o.productlist.main.13.7910br36br36KV&algo_pvid=589f0dd0-9065-4db6-bcb9-92b34578ba38&algo_exp_id=589f0dd0-9065-4db6-bcb9-92b34578ba38-6&pdp_npi=4%40dis%21EUR%212084.85%21959.03%21%21%212209.46%211016.35%21%402101c72a17112725002068637e4992%2112000036269508148%21sea%21BE%212226284102%21&curPageLogUid=qZxiYOmc4PYM&utparam-url=scene%3Asearch%7Cquery_from%3A

Well the Xangsane is comparably affordable and has a 90 day return period so maybe worth a try. Though could it be comparable to a Shunyata Research Sigma V2 or an Audioquest Dragon or Nordost TYR 2? I'm looking at the long term here. But these others I can only afford used. And used they're on the expensive side.

I use the Purist Audio Design Corvus power cords and speaker cables with my Pass X260.8’s.  Yeah, I had to buy two power cords.    The noise floor dropped noticeably with these cables.  Sound is excellent.  The two amps plug directly into an outlet on a dedicated circuit.  

Are the Xangsane DIY?