The JBL R3500 marine source unit delivers powerful, dependable sound engineered for life on the water, combining bold design with trusted audio performance. Built to withstand harsh marine conditions, its weatherproof face resists rain, UV exposure, salt, and everyday splashes with confidence. Featuring robust 4 x 55W peak output, 2 ohm stability, Bluetooth 5.0, USB and auxiliary inputs, and clean pre-outs, it supports expanded speaker setups without the need for an external amplifier. Dual Bluetooth connections let multiple users share control, while fast pairing and extended range keep music flowing. With AM, FM, and weather band tuning, backlit controls, and rigorous reliability testing, this stereo brings premium sound, convenience, and durability together at an accessible price.