But not for the fact that Griffin's already using the name AmpliFi for a speaker product, it would have made a lot of sense for this new iPhone and iPhone 3G dock called AirCurve ($20). Made from transparent plastic and held together with metal screws, AirCurve is a passive amplifier for the iPhones' speakerphone features, channeling the speaker and mic's audio in a manner that's supposed to noticeably improve volume levels -- 10 decibels, Griffin…
