I painfully (not painstakingly... definitely painfully) braided a 4-core cable for my Sabia V6. With the technique finally down, I might try a few more. Not sure if it really needs a heavy duty Y-split and looks natural enough without one... maybe it depends on cable quality and use/abuse? I personally can't see it being an issue. Suggestions welcome, this is my first DIY earbud re-cabling, normally I stick to full size headphone modding. The only thing I would change is a smaller heat-shrink strain relief at the plug, and maybe transparent instead of black.