InfoComm 2016: NHT Shows New Univox Class D Amplifiers for Hearing Loop Systems June 10, 2016 | Home / June 10, 2016 rave-video / InfoComm 2016: NHT Shows New Univox Class D Amplifiers for Hearing Loop Systems InfoComm 2016: NHT Shows New Univox Class D Amplifiers for Hearing Loop Systems