Boss Audio MUSB35 USB/Aux Accessory Extension Cable

The Boss Audio MUSB35 USB/Aux Accessory Extension Cable is a dual-function marine audio connector designed to extend connectivity between portable devices and source units on boats and watercraft. This 6-foot cable combines a 3.5mm audio jack and USB port in a single connector, making it ideal for integrating smartphones, tablets, and portable media players into existing marine entertainment systems without requiring multiple separate cables or adapters.

The cable features a 1.8-inch combo port that accommodates both standard 3.5mm auxiliary audio plugs and USB connections. At 6 feet in length, it provides sufficient reach from helm-mounted source units to battery compartments, electronics lockers, or cabin areas without excess slack. The 1.5-inch cutout diameter specification ensures compatibility with standard marine equipment panels and dash installations. This construction delivers the flexibility needed for both power delivery via USB and simultaneous audio streaming, eliminating the need to choose between charging and listening on modern mobile devices.

This extension cable addresses a common challenge for boat owners and anglers who upgrade to contemporary audio systems: integrating newer portable audio devices into existing marine installations. Weekend boaters running weekend fishing trips and serious offshore anglers alike benefit from the dual-function design, which supports both audio streaming and device charging during extended time on the water. The extended cable length accommodates the layouts of center consoles, cabin cruisers, and recreational fishing vessels where the source unit and device storage are separated by several feet, maintaining clean routing along helm electronics and avoiding strain on connections.

The MUSB35 pairs with Boss Audio source units and compatible aftermarket marine receivers, offering a practical extension solution for systems where the factory cable length falls short. It interconnects with standard RCA cables on the source end, integrating seamlessly into existing dash or console layouts where space is limited or where relocating audio equipment is impractical.