I'm really liking it !!!
But to have it wired like this really makes sense when you think about it.
The amplifier is balanced so that means that the current going through the headphone drivers are going back into the amp and then back out into the drivers again. Essentially the wiring inside the amp, the cable and the headphone driver is one big closed circuit. There is no ground that the headphone driver can see.
And I can bet you that the wiring inside the amp is pure copper so to then introduce another cable into this loop that is copper/silver (like the stock one) really doesn't make a lot of sense from an engineering standpoint. Why would you mix two different kinds of cables in one circuit? It really doesn't make a lot of sense.
To me the music just became "more musical", it's more relaxed and composed. The overall effect of the system is that it no longer feels like "digital music", it just sounds like "music". Which is very nice.