Bringing tough, ultra-compact design with Bluetooth wireless connectivity, the Garmin JL Audio AP 4-Channel Compact Marine Amplifier with Bluetooth Technology lets you enjoy every note from every part of your boat. This marine amplifier pairs with your compatible smartphone for seamless audio streaming and includes a wired remote that allows flush-, surface- or bar-mounting. Highly efficient Class-D design provides lower battery drain with a higher output than Class-AB amplifiers. This delivers increased power to the connected speakers/subwoofers for an enhanced level of audio performance. The remote boasts IPX7 waterproof durability, and the amplifier has IP67 waterproof protection (excluding cables) to withstand abuse in harsh marine environments. Its compact size makes it a perfect addition to your small boat, personal watercraft, or overland vehicle. Bluetooth wireless streaming from your compatible smartphone Amplifier has IP67 waterproof protection (excluding cables) Wired remote with IPX7 waterproof durability Efficient Class-D design for lower battery drain plus higher output than Class-AB amplifiers Compact design to fit in a small boat, personal watercraft, or overland vehicle