ST Series line arrays use advanced technology and application-driven engineering to bring vertical arrays closer to the ultimate reference point (reality) in demanding environments. Fully integrated electro acoustic systems with all elements optimized deliver superior fidelity and coverage. Wherever the venue is appropriate for a high-powered vertical array, a RHAON empowered STLA/9R or externally powered STXLA/9 line array is the logical choice for demanding designers, operators and audiences. The self-powered STLA/9R with RHAON and the non-powered STXLA/9 are the basic building blocks in the Renkus-Heinz STLA Series of high power line arrays. Their unique design allows arrays of all sizes to be quickly and easily assembled and installed safely and securely.