This page contains details of actual audio upgrades that FOUR MASTERs have carried out on specific car models. These are categorised as: Audio Joy, Audio Heaven and Audio Expert each one having it's own budget level associated with it. Some are simple speaker upgrades while others are full audio system upgrades. In all cases, the costs do not include labour. The eight boxes below feature the current top eight cars that customers bring to us for better audio. If your car is not amongst them, select the manufacturer in the box below. If your car is still not listed don't worry, we are confident that your local FOUR MASTER can provide a solution for any vehicle available.