Lazarus Short
Well-Known Member
I would just love to score another pair of Yamaha orthodynamics.
Koss PRO/4AA what do all the AA's and AAA's mean?
I got a pair and they still sound amazing.
How do they rank against modern headphones like HD280 or AKG's?

Koss PRO/4AA what do all the AA's and AAA's mean?
I got a pair and they still sound amazing.
How do they rank against modern headphones like HD280 or AKG's?
Can you send me the Koss brochure or post it somewhere?
Amazingly they still make the PRO/4AA and several others like 4AAT.
No one seems to have published measurements on them.
For the money I think they're great.
What are you smokin', caused I'd like some.The Koss PortaPro sounds great, better than the Pro4aa to my ears.
I really liked my Realistic LV-10 that I bought new circa 1975. But then, I was young and impressionable.
For more info, see page 29 of
http://www.radioshackcatalogs.com/catalogs/1975/