REAudio SA 1000.1 1400W Monoblock SA Series Class D Amplifier SA Series Monoblock Class D Car Amplifier RMS Power Rating: 4 ohms: 200 watts x 1 chan. / 2 ohms: 300 watts x 1 chan. / 1 ohms: 700 watts x 1 chan. Max power output: 1400 watts Mono channel operation Speaker-level (high-level) inputs with signal sensing for automatic turn-on