sentences:  In 2005, the company was sold to Armadillo, which expanded the brand from only electronic drums into a wider range of products.Ddrum is a sister company to Dean Guitars and produces drums that fall into one of several series, grouped according to quality and materials used in construction.In addition, ddrum is one of several manufacturers that offers customers the ability to customize their own kit from a number of criteria including shell dimensions, finish, and hardware options in what they call the "USA Custom Shop."