I bought 3 FM modulators first one was generic second was a clarion both sounded so bad not usable. Installer.com highly recommended there Audiovox (FMM100) a little pricy but got it anyway. Sounds great for Aux input for MP3 player, as far as I know this is only way to get Aux on stock head unit. So if any one is wanting same I recommend this you need there VW antenna adapter kit (VW30) as well. This is not perfect some hiss when very loud but best solution I found. I find it totally usable and enjoy finally getting to use my MP3 Player. I also bought high to low adapter for dash speakers so I can put small amp on them, can’t even hear them. I have no intention of changing head unit, speakers yes.