Transform Your Factory Audio — The Right Way
The OPTIBMW4SUB & OPTIQUADLOCK 3 harnesses give you the freedom to upgrade your sound system with confidence, and zero compromise.
£69.99
VIBE OPTISOUND BMW Plug & Play Integration Looms
When upgrading BMW factory audio systems, the greatest improvement to sound quality comes from separately amplifying the under-seat subwoofers using dedicated amplifier channels. VIBE is proud to introduce two new OPTISOUND plug-and-play looms designed specifically for installing aftermarket amplifiers in BMW and MINI vehicles.
Professional OEM Integration
Each product features genuine OEM-grade connectors for direct, non-destructive installation, allowing the vehicle to be returned to factory specification if required. The looms include high-quality OFC speaker cable with protective sleeving to maintain the premium OEM factory appearance throughout the installation.
Fast, Foolproof Installation
These Plug & Play harnesses dramatically reduce installation time for professional installers, turning what would traditionally be a complex wiring job into a straightforward plug-in upgrade. For DIY enthusiasts, the simple connection process eliminates common wiring mistakes such as incorrect polarity, poor connections, or accidental damage to factory looms — making a professional-grade installation achievable at home.
Smart Signal Distribution
Engineered for BMW and MINI vehicles with base audio systems (non-amplified factory setups), the intelligent T-connection design cleanly splits the audio signal to both the front door mid-woofers and under-seat subwoofers — all without cutting or modifying any factory wiring. Installation is completely non-intrusive, preserving vehicle integrity while unlocking superior performance.
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