<http://4.bp.blogspot.com/_nFPh3HIPj5o/SxOpOew9eEI/AAAAAAAAAfU/BpZIpvWgsPg/s200/Asus+Xonar+STX+sound+card+with+Burson+opamps++4.jpg>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.bursonaudio.com/asus-xonar-stx-sound-card-upgraded-with-burson-opamps/>