The VDA-4 is a compact, high-performance video video signals distribution amplifier for use in distributing color or B/W composite video signals. Each amplifier distributes a single video signal to four amplified outputs. Each output is a 1 volt composite video signal. The VDA-4B has standard BNC connectors on its’ inputs and outputs, while the VDA-4F has standard Fstyle BNC or F Style connectors on its’ inputs and outputs.The VDA-4 outperforms many other video distribution amplifiers in its’ ability to provide a good video picture in low AC voltage situations. The VDA-4 can continue to supply a good picture on each output down to 65VAC.Each VDA-4 comes with a UL/CSA approved wall power supply. The VDA-4 does not require you to sacrifice rack space, it can be mounted where it is most convenient.