The latest generation of Power Amplifier technology, not only can provide the Power for the speakers, but also built-in with Volume & Zone Control, rich input & output, while the Amplifier can provide 70V/100V or 4 - 16 ohm Output, have circuit protection and overload overheating function. PA Series is one of the Best Power Mixer, it can be Best solution for Public Address Sound System (Paging) such as Ceiling, Column, Pendant & Horn Speakers.