Garmin's latest amplifiers keep the party going with a robust sound and heightened clarity, perfect for boats and off-road vehicles Choose your amplifier Operating with an efficient Class-D design, the JL Audio AP Amplifiers offer increased power to connected speakers and subwoofers with a lower battery drain than Class-AB amplifiers. Available in four different options, boaters and off-road enthusiasts can choose the model that best fits their audio setup. Three of the amplifiers contain Easy Tune function ...