Short review: For those who similar to their computer, laptop listen to music want to connect to an amplifier or stereo system, which this device is warmly recommended. Long I have struggled with the jack to RCA cable connections and the constant bad contacts and sudden failures of the boxes and the resulting dull mono sound. With the Behringer UCA222 and USB to RCA connection that is now over and the sound even better by far. This is only a practical application of the many ways (see data sheet u. More reviews) that has this small audio converter and alone worth the money.