MB Quart MBQRT2-S7R 500-watt, 7-speaker audio roof with a GMR7V1 touchscreen CarPlay source unit. It features six powersports-specific 6.5-inch coaxial speakers, a 10-inch powersports-specific subwoofer, a 500-watt 5-channel Class-D amplifier, and a 32-inch half-optic light bar.