I came here to say just this. I've had similar experiences, and have loaned my 7506's out to sound engineers on the road when their cans broke.
As pro audio gear, they're also designed to be repairable. Having spent a few dollars on replacement ear pads, I have a pair of 7506's that have lasted 10 years.
My first MDR-7506's had very soft rubber on it's cord, and eventually it broke. Changing the coil requires soldering and I and another person who actually had experience could not get it done, the wire resisted all attempts somehow... So not as repairable in my mind, but it is obviously somewhat relative term.
Still bought new ones and the cord has been fine, if someone is wondering. Would prefer if the cord could be changed by just plugging a new one in however :)
