EVOX 400.2 4-OHM - Soundigital 2-Channel 400 Watt RMS Motorcycle Amplifier. Current Draw (Music): 21 A. Current Draw (Max): 42 A. Bridge Power @ 4Ω: 1 X 400 WRMS. THD + N (10% Rated Power): 0.1%. Crossover LPF: 45Hz – 850Hz.