Velodyne's Digital Drive series is legendary for its technologically advanced sealed designs, active servo control and high fidelity, low distortion output. If the DD18+ is any indication Velodyne has significantly raised the bar with the new "Plus" series over the previous Digital Drive subwoofers. Greatly increased output headroom, better cosmetics and fit and finish being a few major areas impacted. Velodyne has also packed an extreme amount of hardware into the unit with on board EQ, remote control and more connection possibilities that seen on most any other subwoofer. The DD18+ achieved our Audioholics "Extreme Room" rating and is the first sealed subwoofer to do so. It was also the recipient of our 2011 Subwoofer Product of the Year Award. This new found sense of might comes at no cost to fidelity as the DD18+ exhibited the excellent sonic reproduction typical of Velodyne's sealed servo subwoofers and was utterly unflappable no matter what was asked of it. The new curved side panel cabinet design is more robust and the review unit looked absolutely fabulous in the gloss black finish. All of this technology, attention to detail and overall high quality does of course carry a very hefty sticker with it. $4,999 msrp is a lot of money but if it is within your budget you can be assured that you are buying one of the finest subwoofer systems available. \n\n\nDiscuss "Velodyne Digital Drive Plus 18 (DD18+) Subwoofer Review" here. Read the article.