HI have the IPOD NANO, and also have the stock clarion aux interface unit. I love it and it works very well. Regarding the sound level, it is a setting in you IPOD. My sounds is fine at 20 or 22. There are some configurations you can change in I TUNES to adjust the equilizer and sound limiting also. Give this a try. Any way I have had no problem with my and the level is same as a CD.
