Yep that's the 3.5mm I was looking at, for the cable it's total 20awg, made up of 2, 28 awg wires. I see that people use 22 to 24 awg, and some are daring enough to use 18 awg. I'd use 2 strands of the twisted 20 awg, so 4, 28 awg wires total.

I have a set of marathon djh-1200, good enough headphones for what I'm doing with them. I'm looking to recable them and was wondering if this cable was good enough... 25' 20-AWG Silver-Plated 2-Wire Twisted-Pair Teflon - eBay (item 230430872302 end time Mar-30-10 17:55:31 PDT) Decided I'd...