.... go to a local retail store. thats my your best bet. if anything happens, u can bring it back to teh store and get it fixed or whatever. only thing i'd buy online are subs (most great subs can't be bought locally, or at least here in canada)... and maybe amps. but HU... many problems happen, knob don't work... screen ****s... i had hella problems from top of line alpine decks to good panasonic decks.