Winegard HDTV preamplifier with TwinAmp technology individually amplifies UHF and VHF signals. Clear Circuit Technology ensures high quality signal path by increasing range/channels and reducing pixelization as well as drop-outs. With ultra-low noise of 1dB, it gives better picture quality and dynamic sound experience. Built with FM trap to minimize interference with digital TV channels. Includes energy-efficient USB power supply with LED power indicator for added convenience. Outdoor TV antenna preamplifier works with any passive outdoor TV antenna and extends the signal range. Provides gain of 18 dB and Noise figure of 1 dB for outstanding sound experience. Supply power at 5 V, 130 mA. Dimensions: 4. 8"H x 4"W x 6"L. TwinAmp Technology separately amplifies VHF/UHF signals and delivers extraordinary performance/signal accuracy. With 10x more power handling capability remove interfering RF signals using band pass filters. Ultra low noise for outstanding signal quality. Installs easily on any outdoor non-amplified TV antenna. Includes LNA-200 boost XT preamplifier, power inserter, hose clamps, 110 V adapter and printed documentation. Weight: 0. 6 lbs. Comes with a limited warranty of 1 year. Winegard Boost XT Ultra-low noise digital HDTV preamplifier offers optimal signal handling capacity. Suitable for use with non-amplified/passive TV antenna.