The first audio unit that bore Volvo’s name was presented back in 1969. Since then, Volvo Cars, together with leading manufacturers, has developed its own audio systems and introduced a number of world-firsts. Among other things, the world’s first RDS radio was in a Volvo, as was the first system with Dolby Pro Logic Surround. And the second generation, Dolby Pro Logic II Surround, was developed i...