Given below are some of the best marine stereos, 1. Pyle Marine Bluetooth Stereo Radio – This stereo is designed to function in high humidity environments. They come with many features and are compatible with popular apps. 2. Boss Audio Systems MR632UAB Marine Receiver – This stereo is constructed from water resistant materials and has corrosion resistance and UV protection. 3. Kenwood KMR – D378BT Marine Boat Stereo – This stereo is very functional and easy to use 4. JVC KD – X37MBS Marine Digital Receiver – This receiver has a waterproof design and has good sound output.