I guess they are very old ?. I can't find anything about them anywhere..  Maybe a reader here know their origin, sound signature and story ?   cheers  

I have read A LOT. I learned that it is all up to my likes when I need to choose. My expectations for my cans are;  durable well built. I will listen to popular music..... Have them connected to my pc most probably with a fiio e12 between.  The last two on the list are out of my pricerange but...