The beginning of PSI in studio
With the arrival of the Quatuor 3 and their clever ISP function (circuit protection), it's the beginning of PSI speakers for the professional audio domain.
31
03, 1980
With the arrival of the Quatuor 3 and their clever ISP function (circuit protection), it's the beginning of PSI speakers for the professional audio domain.
Duo 2 was launched The first HiFi speaker under "PSI" was launched
Alain Roux built his first workshop in Allaman, between Lausanne and Geneva.
