Austrian Audio PB17 Office Headset[custom_html] Closed back Office Headphones with Omnidirectional Mic Boom [ custom_html] Hear the Hi X Difference with This Austrian Audio Headset! Any office headset is useless if you are distracted by a busy workstation. Cut out background noise with the Austrian Audio PB17 Headset, thanks to a healthy blend of 44mm drivers and passive noise cancellation. Austrian Audio's High Excursion (Hi X) technology matches low THD with frequencies to create a