So this is the only one that Matt's ever made as far as I know; it's a six-wire Medusa for my Susvara which I paid close to GBP4,100 for with the AECO XLR. I had to wait about ten weeks for this one; usually his wait time is about twelve. Ordinarily the Medusa for headphones is four-wire; we had some doubts if six would even fit the 3.5mm plugs but it worked out beautifully. This is 17AWG and is in pristine condition.
As far as how it sounds, let's just say mids are lush and highs are out of this world on the Susvara with this; especially after I've burned it in it's quite the addictive sound.
Also funnily I discovered that with this cable I don't really need the Elrog ER300B's on my Envy anymore; the FullMusic are actually pretty much enough with it. Based on what I've read, I'd recommend the WE300B's actually if you wanted even more out of this cable. Not to say that things don't get crazy with the Elrog's but it somewhat eliminates the need for super expensive tubes due to the transparency.
I've never had any power conditioner to properly test this one but it's been astounding for the time I've listened to it. As I'm considering selling the Susvara in favor of something closed-back, I wouldn't need one without the other.
At this price I'd include DHL to anywhere in the world and I'd prefer GBP to either order another one in XLR or get some of his Phoenix for my IEMs.