I bought a TASCAM 4 track digital recorder (DR-40X) and it came with a free pair of AKG K92 cans. These normally sell for ~$60 at Guitar Center, so they were a good add on. I sure don't need any more over-the-ear headphones, so I was going to leaved them shrink-wrapped and sell them; but of course, my curiosity got the better of me and I opened the box. These were described as "Professional Monitoring Headphones", so they are closed-back (to prevent music leakage into open mics). 32 ohms makes them easy to drive, even from a phone or portable...