I just got this HU and i'm very satissfied with its sound,but my friend(he's got one too)doesn't really like the way it sounds now,so he's thinking of getting external EQ,which i don't think will solve anything.The question is:Is it worth the money buy a new one,if he has one built-in already?Are those(in 9835's) internal EQ's any good,or they are just there to have more features. I'm new to these EQ's,so correct me,if i'm wrong. Thank you for your input.