the cable signal enter my house be somehwat low power -lrb- we live at the end of a long line -rrb- , then it get split 2 way to a cable modem and a main distribution amp , each get -9 db of signal -lrb- per the cable modem diag page -rrb- . then one of the leg from that DA get split another four way . the line directly off the DA have a okay digital and analog signal . the line off the 4 way splitter have a rather noisy analog signal but no digital tv would detect any of the digital channel , much less attempt to pixelate . I connect this amp just before the initial 2-way splitter . the cable modem indicate +3 db and the snr of the digital signal be improve on the line directly off the DA -lrb- although there be no visual difference of course -rrb- . the line off the 4-way splitter now have a very clear analog signal as well as sufficiently high signal to receive the digital channel . excellent amplifier and easy to install . the retail version may include a coax cable for power , but this one do not but it provide for remote power if you want to put it even closer to the pole -lrb- the closer the better , so you be not amplify the noise too -rrb- -lrb- you 'll need a power insert to do this -rrb- .