The SA Series provides affordable high power amplification for concerts, theaters, clubs, touring and fixed installations. And SA Series power amplifiers utilize the same engine as the DA Series. So the sound remains the same. SA Series amplifiers may be upgraded to full computer control. By adding an internal microprocessor control board, along with the same external network interface adapter that DA amps use, SA amplifiers can readily be controlled from the same software as the DA Series. In fact, they can easily co-exist on the same network with DA amps. Models are available in three power levels: The SA-400B produces 480 watts per channel, the SA-600B produces 600 watts per channel and the SA-700B produces 775 watts per channel (into 4 ohms).