The Radio Shack (Archer) 75 OHM 4 Set Distribution Amplifier (Cat No 15-1107) is a plug-in splitter/amplifier designed for cable TV signals. With a signal gain of 20dB, this amplifier allows for stronger reception and clearer picture quality. The black amplifier has one input and four outputs, making it compatible with a variety of cable TV setups. Easy to install and perform effectively, this amplifier is a reliable accessory for improving your TV viewing experience. PRE-OWNED CONDITION AS SHOWN IN PICTURE PLEASE LOOK AT ALL PICTURES BEFORE PURCHASING AND PLEASE FEEL FREE TO MESSAGE ME WITH ANY QUESTIONS OR CONCERNS YOU MAY HAVE THANK YOU FOR LOOKING AND HAVE A WONDERFUL DAY 😊