Well, I have another question that seems appropriate for this thread (is a noob permitted 2 questions in the same day?)...
One thing that interests me about the 1540s is that they have separate cables going to each ear cup. Something I've noticed about my current pair (X1s) is that "center" is not exactly in the middle, but slightly to the left. On the K545s I had, center instruments seemed even further off to left. The M-100s were good, my M50s are perfect. I realize "center" can vary depending on the recording, but there are those songs that you are familiar with and you know that kick drum should be right in the middle sweet spot in your brain.
I'm wondering if having two cables feed the phones ensures a better L/R balance, as opposed to one cable that goes to one side?
[Of course, the imbalance could just be my imagination. But it sure is distracting!]
Ahh it doesn't matter much tbh. It does balance the weight though.