BOSS Audio Systems MGR250B Bluetooth Marine Receiver — IPX6 Weatherproof, USB/AUX, Front & Rear Pre‑Amp Outputs

The BOSS Audio Systems MGR250B is a marine-grade Bluetooth receiver for streaming and managing audio from smartphones, MP3 players and popular apps like Spotify and Pandora. Connectivity and playback: wireless Bluetooth streaming plus a USB port for media playback and USB charging; the unit does not include a CD player. Weatherproofing: built with a front panel UV coating and a PC board treated with conformal coating, and rated IPX6 for protection against splashing water. Inputs: a USB port for access to stored audio files and an auxiliary input compatible with smartphones and MP3 players. Outputs: dedicated front and rear pre-amp outputs to connect speakers — front left / front right and rear left / rear right.