SiK imp for iPod (car charger with line-out audio)
Great iPOD Car Essential
This product is great, especially if you have a high end audio system in your car and your ipod plugs directly into the system. <br /> <br />The standard headphone jack on the iPod compresses the audio signal and delivers a sound that does not include the low frequencies. They do this because most headphones do not have a subwoofer or specialized speakers for different frequencies. <br /> <br />By using the SIK adapter, you get pure, uncompressed audio that gives you the full range of the music. I have 2 JL W3 10\\" subwoofers in my car, and the difference between the audio quality and bass response is like light and day.