This amplifier provides 8 ports for multiple TV sets, cable boxes, or cable modems. It boosts signal strength by more than double (+4dB), Improves Analog, Digital & HDTV Picture Quality, and Improves UHF/VHF/FM Antenna Reception! This amplifier provides the exact same OR BETTER specs as the ones that other sellers are selling for much higher prices. PCT amplifiers are designed to fit into smaller spaces, while providing the FULL performance of larger sized amplifiers.