[Distroyed]

I came across a pair of vintage Koss KO-727b headphones.... probably from the early 70's. Google isn't hooking me up with any info. Does anyone know anything about these, and what they're worth?

 

[Distroyed]

Wow, no vintage experts here?

 

[techenvy]

i also need info on these unique cans?
what year made and what compares ?

 

[francisdemarte]

To resurrect an old thread. I picked up a pair of these for a couple of buck at a thrift store.
They look to be vintage 70's cans and compared to my AD700's, have a very dark compressed feeling V-shaped presentation. Bass and upper mids are exaggerated, they sound congested, they don't extend very fall either low nor high.

They seem to work well, unsurprisingly with some 60-70's classic rock and some jazz. I'm pretty happy for the $3 I've spent

The pads are hard rubbery plastic so they get hot after a while.

 

[crashtest33]

Just dug out my Mum's ones too!