This MB Quart package bundles five components into one tuned audio system for the Jeep Wrangler (JL): a 12-inch application-specific high-output subwoofer, a 400-watt full-range two-channel Class-D amplifier, a 400-watt high-efficiency Class-D subwoofer amplifier, a 4-channel line output converter, and the wiring needed to tie it together. The subwoofer enclosure mounts to the interior tailgate panel using the included hardware, and the powered coated amplifier mount holds up to three MB Quart NA2/NA4 amplifiers.

Installation is plug-and-play through OEM-style harnesses, with signal harnesses covering Wrangler (JL) and Gladiator (JT) model years 2018-2023 and 2024-current, and a power harness that supports up to three NA2/NA4 amplifiers. The subwoofer is rated at 2 Ohm impedance with a 24Hz to 500Hz frequency response and 86.6dB 1W/1M sensitivity, and the translucent speaker grilles let the integrated RGB lighting shine through.