ThurstonX
Headphoneus Supremus
Sammy's livin' rent free in my head, it seems. Of course, I'm too lazy to dig up links, so, what he said.First get these.
http://www.ebay.com/itm/191636111735
Then start with these.
http://www.ebay.com/itm/151621028745
There are many other 5670/396a/2c51 variants. They're far cheaper than all "elite" 6922, and are far better imo. Ymmv.