On most TVs and projectors movies and games are too dark or missing detail in dark scenes. Gamma X fixes this by adding a 'Gamma Boost' without washing out the picture. Simply connect the Gamma X to the HDfury3, HDfury2, HDfury1, HDfury Gamer Edition, or any device with RGB output and enjoy a more vibrant picture with perfect shadow details! Using the original HDfury1 or HDfury Gamer Edition? The Gamma X also includes a cable driver which lets you use monitor cables or long RGB projector cables (any length) without having to plug the HDfury or HDfury Gamer Edition directly into your TV! The optional power supply is not needed when the Gamma X is used with the HDfury2, simplifying the cables and connections. (The power supply is needed for HDfury, HDfury Gamer Edition, or other RGB source users). Many projectors and displays only work with either positive or negative sync RGB signals. The Gamma X provides a user selectable positive or negative sync switch for displays that only accept negative sync such as the following projectors: Barco 800/801/808/1208, Dwin 500/700, and so on.