The Pyle Marine Grade Multi-Channel Amplifiers feature built-in Bluetooth technology for wireless streaming audio. Instantly connect and stream from your favorite devices (works with iPhone, Android, Smartphone, iPad, Tablet, etc.). Additional features include 2 Ohm stereo stability, electronic crossover networks, RCA line low level input connector jacks and integrated power protection circuitry. The amp systems also include a waterproof 3.5mm stereo-to-RCA adaptor, DC 12 Volt connection cables and Bluetooth flush-mountable controller. Enjoy marine grade amplification with the Pyle Marine Grade Multi-Channel Amps.