The HDL 50-A 4K is an active 3-way line array module for large-sized events, indoors and outdoors. It features a sound pressure level of 143 dB SPL with a built-in 8000 W PEAK and 4000 W RMS Class-D four-channel amplifier. Equipped with eight best-of-class transducers, it offers excellent playback quality, ideal for professional musical applications. The proprietary 90 x 10 degree 4PATH waveguide with the symmetrical design of the cabinet delivers optimal coverage.