The PowerPro Companion Speaker is the first portable companion speaker to deliver wireless capability. It comes equipped with one 16-channel built-in wireless mic receiver and a balanced XLR mic input as well as an active bus circuit that can be used to connect two additional units in a conventional wired fashion. A non-powered support speaker can be connected via the 1/4 inch speaker out jacks. Its 10 inch high-powered woofer is driven by a beefy 40 ounce magnet (the most efficient in its class) and a high-frequency compression driver for optimal audio reproduction. The PowerPro Companion Speaker also has independent bass and treble controls, digital master volume control, power status indicator and a universal power supply. The PowerPro Companion Speaker gives added assurance during use by providing visual confirmation of power, radio frequency and audio reception for its wireless receiver through a set of LED lights on the front of the speaker.