This adapter cable has one side with both a male and female SCART plug and one side with a 3.5mm jack. Simply connect the SCART plug to your TV and plug your headphones into the 3.5mm jack. This allows you to hear the sound from your TV on your headphones without the sound being muted at the headphone jack. This product is also useful for pre-amplifiers which can amplify the audio signal. This will give you a fuller sound.