Power Cable Break In - Such a Change!

@ozzy 
I put together two new power cords about a week ago using Furutech FP-S55N with FI-50 NCF and FP-S032N with FI-28(R). Going thru almost exactly the same nasty break in as you are experiencing with Audioquest. 
The minute I plugged the new power cord in the sound was incredible. Best I ever heard my system sound. Then 2 days in harsh, muffled, artificial, glare, boomy. Then there was no bass…gone…just harsh mids and highs. 
I stopped listening and just gave it a 3 days with the components on 24/7.
Thankfully about 110-120hrs in it’s coming around.  The delicate highs, clarity in mids and textured lively deep bass. I’m expecting it to settle around 200hr mark but continue to improve up to around 600hrs based on what I’m reading. 
Break in is real and this was worse than anything I have ever heard during the break in phase. 

audphile1,

I have also built many power cables. The best I made was using pure 10 gauge solid .9999 silver wire with the Furutech NCF fittings. I used oversized Teflon tubing and braided them similar to the Dragons. They sound very good, but alas not as good as the Dragons.

ozzy

wesheadly,

The Dragons are broken in at the factory, but they still will require many hours within one’s system to fully break in or develop. They also have bias circuitry that is not activated until you pull the tab activating the battery when installing them.

I do get it about the pricing, I have been fortunate in that I purchase items mostly used and can sell them if I want for almost what I paid for them. So, not too bad in the long hall.

I have noticed that as my system has improved, it is easier to tell the improvements.

ozzy

rodman99999,

You have me confused...

ozzy

I don’t understand, with the descriptors often used for cables, how we don’t have clear measurements showing the “dramatic changes” users report hearing. I’m not suggesting testing the cable, but rather, testing the sound of cable 1 from the LP, and then contrasting that with the sound of cable 2 measured from the identical location? It’s easy to eliminate the duplicate sounds from both leaving just what has changed. The tighter bass, or the better/ different midrange, or airier highs, etc, should easily come through, right? 
 

So, why hasn’t that been done? Why has no cable manufacture shown this? For that matter, what proper test is there, video, showing people clearly able to identify cable 1 from 2? Especially considering there is “such a drastic difference?” Especially considering one cable can cost 10 bucks vs. 4K and more? 
 

To be clear, I’m not saying measure the cable, but record the sound and eliminate what is the same. Those audible differences can be measured. (Hell, toeing a speaker out on one side can be measured, so why not this?)