Hmmmmm... I'm guessing I would then lose a lot of sound quality?   I"m really surprised this is so difficult to figure out! It's such a simple circuit. How much power can the wired power input be supplying that I can't replicate it with batteries? Or is it possible that there is a completely...

Is there a way to bypass the power requirement, which I'm assuming is only for the noise cancellation...? Or is there a powered "amp" of sorts that is fed by the batteries [or in my case the power input]?

Still no luck getting mine to work... I've tried a 4.6v transformer and nothing. Too bad, these are some good looking headphones. I guess I'll never find out if they sound as good!

Still digging through drawers and boxes! I'm going to pull the other side and see if there is something wrong over there.   Thanks for the help.

I looked everywhere and couldn't find one... I'll look again, I'm sure I've got one somewhere. So assuming the headphones actually work, what should my next step be regarding the batteries?

And where would I find these transformers you speak of...?!

  No I didn't try a transformer... Just went straight for the batteries! I guess its possible they don't even work.   So, am I SOL?

  Lol! Thats what it looked like... except not as tidy!!!   So yes, I took that side apart... is there something I should be looking for? It all looked connected, I found the black and red wires [presumably the power] coming in from the cord. I even tried touching the wires from the external...

Thats kind of what I thought... I've taken apart the side that the cord runs into. Is that the circuit side?! Pardon my ignorance!

Sorry to raise this thread from the dead [and for my first post!] but I need some help and this is the only place it appears I might find it... Here goes:   A friend of mine gave me a display model set of Beats Executive headphones. As with the original poster, mine have a power cable attached...