my PIONEER SE-2 stereo headphones

Here's one of my favorite sets of headphones, PIONEER model SE-2, "OPEN AIR". I've had them for a number of years now but haven't ever really searched to see how old they might be or any of their exact specs -- they go at least far enough back that they have a 1/4" phone plug, to fit REAL (IMHO) sorts of audio/video equipment. (instead of the 1/8" size now commonly found on earbuds, phones, computers, and yada yada cheap gadgets)

They still work perfectly are in regular use here, being able to reproduce an excellently wide audio bandwidth. (again likely a bit more on either end than today's lesser sources of recorded sound) They also happen to be quite comfortable to wear! :-)