Where did you pick up the 4 pin mini xlr plugs?

I've had the P7s for about a month too, they're wonderful. Good enough isolation to make me forget I'm at the office when I need to concentrate. They're simply a really enjoyable headphone to listen to, doesn't hurt that the build quality feels fantastic.

  Anyone interested in a decent set up from the University of Washington Surplus store?     * Kyocera B-910, Non response Fine Ceramic pure Class-A 35 amplifier * 2 Audio research Classic 120 mono-block amplifiers * 1 Audio research LS-25 pre-amplifier * 1 Audio Research CD-2 CD...