Hi-X65 - Austrian.Audio - Professional Open-Back Over-Ear Headphones
Amazon.com: Austrian Audio Hi-X55 Over-Ear Headphones - High Comfort with Slow Retention Ear Pads - Maximum Flexibility - 3.5mm Jack - Includes Adaptor to 6.3mm - Black : Electronics
Austrian Audio's high-end headphones and amp is a setup for serious audiophiles | TechRadar
Austrian Audio Releases Hi-X15 and Hi-X25BT High Excursion Headphones | audioXpress
Austrian Audio Hi-X55 im Test - Ein Kopfhörer wie kein anderer! - Miniklangwunder