The PMDA series is a range of 1U Class-D high power amplifiers with 4 zone outputs, each with separate volume controls. Powered by advanced switching power technology, these amplifiers stands out with its remarkable energy efficiency, consuming minimal power while delivering exceptional performance and generating less heat. Efficiency meets intelligence with the automatic standby feature. After one minute of no signal input detection, the amplifier will seamlessly switch to standby mode, conserving energy. Once a new signal is detected, it will immediately wake up, ready to deliver exceptional audio quality. Rest assured that these amplifiers are protected at all times, it incorporates complete short circuit, overload, high temperature, clip, and DC protection mechanisms, ensuring the longevity and reliability of your investment. Perfect for applications in a bank, town hall, supermarket, school, hotel, restaurant, shopping center or any other public space.