uses a combination of high-powered yet lightweight speaker drivers made to our unique specifications and high-efficiency, Class-D amplifiers engineered to produce the mid-tone...-held remote control (PS-RCU) or by 3rd party cockpit audio panels that have a "PA" or "AUX" output capable of sending an adequate signal to the Power Sonix amplifier. For dzus... power supply but needing optimal performance, ask for the "+" series from Power Sonix which includes a DC-DC converter with the amplifier to boost the power up. Refer to the Power...