I use to work there, and have a set of those myself. I never usually saw any of the cables come in broken unless usually mistreated or stuck in something and 'yanked' free. I've seen people put electrical tape around a fraying cable, but nothing on it preemptively.
I haven't worked there in about 3 years and I don't think they've created a thicker cable for it.
If you are referring to the part of the cable where the mini-jack connects to a device, they tried to slim it down so that it could fit properly in to the recessed ipod/iphone. The original QC2 had the secured rubber braces you would normally expect on headphones and I guess you can check with your local store to see if they have any old cables to spare.
The attenuator itself costs about $10 unless the price has raised since I've been there.
cid681 (rep: 1.1k) posted Mar 22, 2013
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