This is a brand new, four (4) port television amplifier, similar to the products that cable companies uses to correct their system's shortcomings. The amplifier allows you to connect up to four devices to a single input connection, without losing signal strength like you would with normal splitters. The LSA84 provides a gain of +8db (approximately 5x signal gain). Improves Analog, Digital & HDTV Picture Quality, and Improves UHF/VHF/FM Antenna Reception! The unit can be used with Cable TV, OTA Antennas (Analog or Digital as long as they are non-amplified). This model packs a powerful punch in a compact, easy-to-install package! If you have multiple televisions or run a cable modem for your internet, this product is recommended. By connecting this signal booster to the cable drop coming in from the street, you can increase the signal strength and eliminate the need for additional splitters, which reduce signal strength. If you are tired of tv pictures that don't seem as clear as they should be, dropped internet connections, or just desire a reliable amplifier to give continuous, steady signal to your home or business, this is for you! Ideal for both indoor and outdoor applications, the LSA84 was engineered to withstand the harshest environmental threats with the capability of enduring repeated high power surges.