• BMW M3 Audio Upgrade

    BMW M3 Audio Upgrade Driving Sounds Review

    We came across this excellent review of a FOUR MASTER install into a BMW M3. According to Driving Sounds Magazine, it remains one of the finest BMW upgrades for the money they have listened to. Read all about it by clicking the link below

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A FOUR Master is a specialist installer of audio upgrades to vehicles. FOUR Masters work within a set of agreed standards to provide customers with a predictable, high quality service with a range of unbeatable pre and after sales benefits. These include:

  • Friendly, expert advice
  • Access to a choice of high quality car audio brands
  • Expert System Design
  • 21-Day satisfaction guarantee (excludes labour)
  • Lifetime Warranty on all installations of FOUR products
  • Installation by trained installers
  • Click and Collect on all FOUR products