The 4X4 Quad Distribution is a must have for anyone using multiple Shure AD4Q receivers in Quadversity mode. Providing four individual unity-gain signals (A, B, C, D) to up to four qua receivers, with RF filtering at 470-616MHz, the 4X4 is a compact and powerful solution. Housed in a rugged 1RU all-metal chassis with reinforced rack ears.