First hand owner. Have invoice(but have to locate it ). Used around 2-3 years (to be confrimed against the invoice). Asking for $2,200. 100% work. Selling because of itching to upgrade to Velodyne SPL1200R.
I remember somehow using only 2.0 (Thiel CS1.2) directly hooked up to the PC utilising ASUS Xonar HDAV sound card when my old NHT power amp was in service-not too bad.