I just got a response from the seller. He says he got them 5 years ago from Guitar Center, but he's only used them "for only a month". I'm trying to find out the impedance. Of course I just purchased the 250 ohm Pro's from Adomara for $120 (after rebate), and I already have the 80 ohm version. I was just curious.
Any reason to jump on this? Are the old ones better, by any standards?