Boss Audio Amplified All Terrain Sound System w/4" Marine Speakers & 1" Tweeters - Black. Specifications for Boss Audio UTV4B Amplified All Terrain Sound System w/4" Marine Speakers & 1" Tweeters: Manufacturer: Boss Audio Color: Black Features of Boss Audio UTV4B Amplified All Terrain Sound System w/4" Marine Speakers & 1" Tweeters Bluetooth Audio Streaming Stream can Control your Favorite Music APPs. Easy Pairing with Auto Re-connect Max Power 350 W High Performance Tweeters Speakers Powered by Internal Class D Amplifier Aux-In Plug and Play for Easy Installation Compatible with Audio Output of iPod/iPhone Smartphones and MP3 Players Includes (2) Heavy Duty Straps with Velcro and (2) Heavy Duty Zip Ties for any Mounting Position Weatherproof Fully Marinized System Ideal for ATV/UTV Audio StreamingAudio streaming A2DP is an audio protocol of Bluetooth technology. This profile allows for audio to be streamed wirelessly from your compatible device such as a Smartphone to the source unit so you can enjoy your favorite music or streaming music service such as Pandora or Spotify wirelessly. Aux InputThe Aux Input allows you to connect to the audio output of an external device such as an MP3 Player or Smartphone so you can enjoy your music through your system. Built-In AmpSystems with a built-in amplifier do not require the addition of an outside amp to play louder. You only need a 12V power source a few connections an audio source such as an MP3 player or Smartphone and you are ready to start listening. Class D AmpsClass D is a high speed switching amplifier technology that is more efficient generates less heat and draws less power than traditional Class A/B amps. We use Class D in our monoblock amplifiers to give you massive amounts of power in a relatively small footprint for clean powerful bass. IPX RatingIPX is a rating standard indicating a products level of protection against water. It ranges from no protection (IPX0) to water splashing against the enclosure (IPX4) to complete immersion in water (IPX8) and close-range continuous high pressure high temperature spray downs (IPX9K). The products we test and rate have been designed with activities of the user in mind. Plug & PlayPlug and play systems are the quickest and easiest systems to get up and running. In most cases installation involves simply plugging the unit into a wired 12V power source. Once you have power connect your audio source such as a Smartphone or MP3player and you are ready to start listening. Package Contents: Boss Audio UTV4B Amplified All Terrain Sound System w/4" Marine Speakers & 1" Tweeters Boss Audio UTV4B: UTV4B Amplified All Terrain Sound System w/4" Marine Speakers & 1" Tweeters - Black