Monsters Performance-Enhancing Solution for Music Professionals Since 1979, Monster has provided high performance instrument and speaker cables to performing musicians and recording professionals around the world. In 1998, we introduced Monster Power, a complete line of affordable, audiophile-grade PowerCenters that provided better sound, and complete protection against electrical surges and spikes. Robert Harley and The Absolute Sound magazine said it best, In my ten years as a reviewer, Ive never heard as dramatic an improvement in sound quality for so little money as that rendered by Monster Powers Home Theatre PowerCenter HTS 2000. Now, Monster has created a new line of Professional Power Centers for the musician, studio owner, installer, and backline tech. The PowerCenter PRO 3500 reflects Monsters commitment to creating performance-enhancing solutions for music professionals.