The FlatWave Amped Razor Thin HDTV Indoor Antenna is a highly advanced HDTV antenna. Building off the high performance US patented dual band element design of the original FlatWave, our engineers have embedded a state of the art ultra low noise preamplifier with an amazingly low 1.0 db. typical noise figure, directly at the elements where 100% of the signal is amplified; resulting in never before seen range and performance from an indoor antenna. The FlatWave Amped also features a new USB power supply with LED power indicator. When plugged into a TV with a USB for power the amplifier turns on and off with the TV, saving you energy. No need to worry if you have an older TV set or converter box because a 110V adapter is included. Designed by Winegard, the antenna experts.