Welcome back to Abt's coverage of CES 2017! Our technologist Carl is in the Alpine booth with Chris from Alpine. Chris and Carl are ready to show off more Jeep gear with a complete Jeep add-on sound system. This gear is bolt-on and plug-and-play, meaning it's relatively easy to install and is an add-on to your current system. Plus, the PSS-21-WRA is designed for use with the top off, so road rangers who love to drive convertible-style can still hear their bass. It's a two-hour install project for 2015 and up Jeep Wranglers. Bear in mind that this video was filmed at CES 2017, so check to see if it works for Wranglers that are newer than 2017 models.