All Torus Power AVR ELITE series models are a full-feature state-of-the-art power transformer, isolating and protecting your system. Like all Torus Power products, the AVR ELITE series provides true isolation (using massive toroidal transformers) and protects all connected equipment from the risk of severe power line surges using series-mode surge suppression. Use Torus Power Connect to enable remote power management of the AVR ELITE. In addition, Torus AVR ELITE provides stable voltage to keep equipment running in the optimal range of 116VAC to 124VAC (120V +/- 4V) for any input voltage from 90V to 130VAC. (International units operate within nominal input voltage such as 220V, 230V, 240V; Torus AVR ELITE keeps them operating within a range of +/- 8 V.)