PS: I'm skeptical of most small producers of cable, for the HD650 in this case. There really is a lot of benefit from decades of research and high-tech materials with high-tech manufacturing and termination.
For an example, watch this animation of Cardas Ear Speakers... near the middle, they zoom in on the tiny "Clear Light" cable, then show the minute, detailed design. This is exactly the cable I use on my HD650. Cut open any other cable... imagine what you'll see.
And the cable alone, the single-channel interconnect version:
BTW, f you are interested in why good qualityi shielding is required for MUCH more than noise immunity, check this out. Shielding creates a fixed impedance and isolates the signal from the environment which, as George demonstrates quite obviously and convincingly here, can affect the signal considerably, even massively. Full explanations, quite interesting.
You will never find that from a small producer—microscopic air dielectric, multi-lay counter rotated multi-stranded and insulated micro conductors, and such. Cardas spent decades eliminating issues like glare in the upper midrange back in the 80s on some models and the warm signature which has been eliminated with Clear and other recent models. Thankfully, Clear is not expensive to produce compared to older cables, so price actually has gone down.
These to me are perfect for the HD650, in every respect I can think of... and I'm a jaded and critical listener. Whether freq response, imaging, timbre, detail, body, absence of negatives on any instrument... consistency of quality. It makes the stock cable (at least my ca 2007 version) sound, well, fluffy and foggy.
Having said that, there are many small producers who have, by trial and error perhaps, come up with nice cables. I'm using a Moon Audio mini-mini interconnect and very happy. I used the copper version (never had a good experience with silver yet... too bright and zippy). "Blue Dragon V3 Portable Mini Cable"
Edited by Stoney - 7/7/13 at 11:28am