Custom DC power cables - MSB DAC, Dan D'Agostino...etc

I assume DC is less susceptible to noise? or is the MSB cable also using lower power AC to the DAC....

Revelation Labs seems to have quite a following.  

They are called umbilical cords and there a quite a few companies that make them, usually only artisan companies.

They are mostly made of silver and not cheap.

Tubulus, Revelation Labs 😏 etc.