IMO the base stereo without the sub is super weak for open top use. You can make it sound ok if you tweak the settings and are running roof on with most genres that aren't bass heavy. I'm a bit of an audiophile however so I would either need B&O (which is what i opted for as i don't feel like going aftermarket as of now) or upgrade the stock.Thanks Flip, let us know if you come up with a "retrofit kit". I may be interested if the base stereo is a as bad as described. I have yet to hear it.
Sponsored