The SRM450 is designed to operate from a standard 120VAC outlet*. During normal operation, the SRM450 draws less than 1 amp, however under maximum SPL conditions, where the amplifiers in the SRM450 are clipping, the 120V model can draw as much as 2.5 amps (1.3 amps for the 230V model).

* Also available are 100V, 220V, and 230V models forinternational customers.