What can the AUX input be used for?
The AUX input on this interface requires a specific cable (XIAH-RCA – optional). It has female left and right RCA connections that you can plug any number of audio sources into. A direct connection using RCA jacks is FAR superior to FM modulator or cassette adapter devices. If your device doesn’t have male RCA plugs, you can purchase a simple RCA to 3.5mm (aka 1/8″) stereo mini (headphone) jack adapter from us.