PSI Duo 2 View Larger Image Duo 2 was launched The first HiFi speaker under “PSI” was launched Share This Story, Choose Your Platform! FacebookXLinkedIn Related Posts A21-M V4 Gallery A21-M V4 September 7th, 2017 | 0 Comments Launch of the AVAA Gallery Launch of the AVAA November 30th, 2015 | 0 Comments Introduction of Class G amplifiers Gallery Introduction of Class G amplifiers July 31st, 2008 | 0 Comments Debut of PSI Audio pro audio loudspeakers Gallery Debut of PSI Audio pro audio loudspeakers October 31st, 2004 | 0 Comments 1st study of the AVAA Gallery 1st study of the AVAA June 3rd, 1995 | 0 Comments