Buddhahacker
500+ Head-Fier
For those interested, used T90s are for sale on ebay fro $399. They are demo units from BD. Best used price I have seen on them.
http://www.ebay.com/itm/Beyerdynamic-T-90-Tesla-Headphones-/111258458946
http://www.ebay.com/itm/Beyerdynamic-T-90-Tesla-Headphones-/111258458946