Xtenzi J-Link Aux cable line input adapter for JVC KS-U57 iPod RCA Xtenzi Brand Rca cord for JVC Aux lead connects via JVC M-Bus CD changer port at rear of compatible radio. Feed the audio from devices such as DVD players and games machines into your head-unit as an auxiliary input. Gold plated connections for superior sound quality.Provides a far superior sound quality compared to cheap FM modulators Connect iPod, iPhones, iPads, MP3 players and mobile phones by using an optional RCA to 3.5mm mini-jack. Very easy 'plug n play' installation