If you want uber-kool 70's headphones, there's rally only one contender:
http://www.hifi-wiki.de/images/6/6e/...lectrostat.jpg
If on the other hand you want good 70's headphones that won't give you cauliflower ears and neck muscles like the Minotaur (unlike anything Koss ever came up with!), then again, there's only one contender:
http://assets.head-fi.org/6/69/800x6...+%26+SRD-6.jpg

