I finished building the cable for my HD600 today.
I honestly didn't believe in cable differences and just wanted a cooler looking and sturdier cable.
But once I put them on. Holy moly baby jesus!
I went in with the FULL expectation of them not making any difference.
But it was like going from the sound system from a house party to a sweet club.
Everything was fuller. Bass was THUMPING.
I have not done ABX testing, but the difference is so huge, there isn't a chance that it's all placebo.
But I will post a video sometime soon of my ABX testing.
Expect me to score a 10/10.
=) and <3's to all.