You can daisy chain VCRs or DVD recorders one after another, feeding the outputs of one recorder into the inputs of the next….and dub several copies at once. But, the video signal deteriorates rapidly from recorder to recorder. Typically only the first down line recorder produces a quality copy, while the second recorder produces a mediocre copy, the third a barely viewable copy. Why suffer the quality loss when our Distribution Amps give you one at a time copy quality based on a simple principle