I have try cable tv amplifier in the past but they seem to actually make the picture worse . there be so many cable split in my house for my various tv and device -lrb- TiVo , Media Center PC , etc -rrb- that the analog channel picture quality on many be fuzzy or have distortion and I could not get many unencrypted digital qam channel at all . this both improve to analog channel to as perfect as analog get , and allow I to get the qam channel that disappear after the split !