I'm getting my dad to help who's an engineer so hopefully it should turn out fairly decent, I'll be sure to show him your advice though just incase he's not sure how to go about it. As for the price of a stock cable in the UK, It's around £25 so around $40 dollars... The cable I'm making is going to cost no more than a fiver more or so, so It's worth the experiment I would say. Thank god I didn't buy into the Cardas cable hype for nearly 20% the price of the Mogami if It's not going to do anything different. There is a hell of a lot of talk about cables changing the sound of headphone on the net as you're probably well aware, lots of talk about the infamous 'Sennheiser veil'. Maybe it's the amplfication that's an issue but I always did feel like the HD600's we're holding back somewhat. That's another topic I wanted to talk about and I'm glad It's been brought up, I'm plugging them straight into an old Mackie mixer, does this do them justice? Or would possibly adding amplification in the chain from the headphone out be a good idea?
(I just posted this as a reply to the previous post and it didn't show up, apologies if it turns up twice)