
i have a4 06 non bose and would like to improve my sound quality i already have after market sub and amp installed. Would there be a diffrence in sound quality if i would change my radio to Symphony II+ ? or would the only diffrence be mp3 player and bigger screen? Also i think Symphony II looks outdated
I thought about geting aftermarket radio but i rather go with stock look also does Symphony II+ have that cut off problem at higher volume? (lower bass)

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