ZMF 2k cable
I got the 2k cable in for my Auteur a few weeks ago and have been meaning to comment on them.
Let me preface by saying cables make a subtle difference. Don't go in expecting a night/day change. It does a great job of fine tuning your system though.
I'm currently using my Auteur with suede Eikon perforated pads. This gives some benefits of both the stock lambskin pads for the Auteur (perforated Auteur and Eikon). It was a little too energetic up top for me though. Not enough to bother most people I'm sure but I like a warm tilt to my sound. This cable brought it in line just enough to make the suede pad pairing excellent for me. That super thick copper wire definitely brings out the bass a bit more. It seems that it brings out some more inner details making for a more involved listen as well. This cable does darken the sound a tiny amount. If your wanting the sound tilted in the other direction, Zach has a silver cable for $249.
Craftsmanship is excellent. Very well made and robust. It is my understanding that there will be customization options for these (different wood splitters and jacks, colored sleeves) so you will probably be able to get one to match your headphones if you want.
This cable is at $399. I'd recommend anyone with Zach's dynamics to have a look. Cables at this tier are a luxary though, don't spend money you don't have on one. It is also good to keep this in mind whenever your upgrading your system:
Headphone > amp >= source > cables/conditioners/etc.
Here are some pics of my cable. The pads pictured are the suede perforated Eikon pads. I used the flash in a couple shots to try and show the detail a little better. The case you see is made out of cowhide and will be included in 2k cable orders iirc.