Oklahoma City, OK, May 28, 2019 -- DD Audio proudly presents the DD Audio Sound Off: The Largest Car Audio Contest In The World at the 16th Annual Slamology Automotive & Music Festival, June 8-9th in Indianapolis, Indiana at the Lucas Oil Raceway. The DD Audio Sound Off is a quadruple sanctioned 3X world record event, featuring MECA, IASCA, dBDRAG, and USACi (click here for full schedule). Also returning for 2019 is the dBDrag Bagger Beatz Competition featuring the world’s loudest and meanest motorcycles.

If The World’s Largest Car Audio Competition isn’t enough for you to get your audio fix, the DD team will also be hanging out on the main drag where spectators can stop by the booth to experience the ferocious bass attack of the fully DD Audio equipped BEAST. The BEAST built by Matt Herman, already notorious throughout the USACi competition scene for its glass shattering and metal ripping feats of bass, will be making a 19-hour journey for its Slamology debut at this year's event.

Slamology is one of the world’s largest and most exciting custom vehicle lifestyle festivals featuring a massive car show with over 50 classes, hydraulic demonstrations, custom big rigs, RC racing, tattoo contest, one the hottest bikini contests in the Midwest, and of course the DD Audio Sound Off. Audio enthusiasts travel from all over the world to experience Slamology and they won’t be disappointed by what’s in store for them this year.