As of September 2015, descramblers cost between $55 to $450 depending on the features included and quality, claims High-Tech Productions. Descramblers restore and enhance the audio and video of a scrambled channel.
Descramblers are necessary in order to view premium and pay-per-view channels on a cable system, but must be used with a converter. Converters transpose available channels from the cable company and make basic channels available. Each cable company uses a specific scrambling system, which requires a specific type of descrambler. Converters and descramblers are legal to own and use as long as the owner informs the cable company that he is using the company's signal. It is illegal to receive cable signal transmissions without paying for the service.