The guys at stereo warehouse have always been helpful. They have installed both of my amps and even though there were problems both times (one bad amp, one bad head unit), they fix it every time. Even doing it for free when the next amp arrived and working out a different way to hook up my broken head unit (both bought from crutchfield). Not only that but they really do know what they are talking about and will treat you like a real person.
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