0db is pretty bloody loud, by my standards, and if I'm the car by myself, it doesn't usually get above -10db. When some friends are in the car they sometimes crank it all the way to 0db.

Ah. See, that's why I love being able to set the amp gains and have the player cap out at 0db. Even if my friends do that sort of thing, they can't hurt it.
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Tony Fabris