Greetings
@felipe91, and welcome to this Echole thread..!
Just to gently echo what
@AudioHR has reminded us, the price of an item is not always indicative of performance "outcome", especially when installed in your audio system at home according to your own goals, synergies, and personal preferences. However, in my personal experience, Echole cables has enabled my modest system to ascertain new heights, and have been very musically rewarding. I am a happy and satisfied customer of their offerings.
I believe a large part of the reason for their "above average" cost is because they actually
design and manufacture their unique metallurgy for their cable conductors (using very expensive materials in a refined, production technology from exotic metals of Ag/Au/Pd), where as most cable companies just purchase market available OCC Cu, or Ag, from a supplier to their cost objectives or needs. Thus, Echole cables are (in a sense) exotic, custom cables made by artisans who care only about musical conveyance.
Regarding your question about using an Echole "Omnia 1" Power Cable, I would suspect it is a
very good performing power cable, but I have never used this exact model. [All of the Echole power cables I have purchased thus far have been the "Limited Edition - 2" models.] I believe at one time, the Omnia-1 was their top offering (prior to the introduction of their Limited Edition and the Infinity models), and should provide excellent service to an Amplifier (I believe your proposed use-case).
If helpful, here is their website:
http://echole.com/_power.html
The Echole website indicates/implies that the Omina 2 has a newer "OMNIA 2 grade Silver/Gold/?? Palladium custom structured alloy, (and) several runs of 8N Purity" (from the OMNIA-1) and also now terminates with "Rhodium plated, Furutech terminations US / SCHUKO".
I believe all of their current "Model 2" series (offered throughout, as PC's, SpC's, and IC's) now come with the Furutech NCF Rhodium connectors. Some love these connectors, and, some don't. In my system, these connectors have performed very nicely (and without any negatives sonic characteristics that some Rhodium users have cited). Some caution about too much Rhodium can accumulate in your system. In my opinion, I believe that the Rhodium dilemma may stem from the native attributes of your system (for example, is your system "bright" to begin with), but that is just my (unsubstantiated) conjecture.
Buying into their product line with pre-owned cables may be a way to go (begin), to see if you like it (them) in your system at home. Currently, you might find that their are some (many?) Series-1 cables on the used market from owners who are upgrading to Series-2, so your timing for a Omnia-1 may be good.
I can also suggest reaching out to your local Echole representative for their assistance in supporting your questions and endeavors. I have received excellent support from Echole along my journey, and hope you do too.
I hope this input/feedback is helpful.
Cheers,
Re-tread