Car Audio Stuff dedicated sub-site for the Audison Prima range. The Audison Prima car audio range can be perfectly integrated to the OEM system of any car. Make your standard factory car audio come alive with Prima from Audison. Ray Smith CarAudioStuff Ltd is Scotland’s premier Four Master dealer bringing you Audison Prima products. Prima amplifiers with inbuilt DSP 9 channel adjustment coupled with the Prima Replacement Speaker range for every car makes for true Hi-Fi sound.