Tuneslover
Headphoneus Supremus
It was never designed to be hot/frequent swapped in the first place. Only for when you need to replace it after the pads are old and worn.
Um I removed the original "worn" ear pads once in order to try out the brand new HD6XX pads briefly (for a couple of days) and then removed them in order to put the old pads back onto the HD650. Far from hot/frequent swaps. But hey now I know, once you remove the ear pads they're pretty much shot. I still think that's pretty lame quality for ear pads though.
From a value proposition, I could spend roughly an additional $40-$50 and be able to purchase a Magni 3 headphone amp. But hey Sennheiser wants you to spend your $60 and they will give you some foam, felt and plastic in return. They got you by the short & curlies though because you gotta have that foam, felt and plastic if you want to be able to listen to your HD650's.