SRS says its iWow 3D adapter will surprise you by how fantastic it will make your music and movies sound from your iPhone, iPad or iPod.
There are official Apple accessories for the iPad, but some people want more than just a keyboard or a SD card slot. That's where third parties come in. Some are cool, some are pointless and at least one is just ill-advised.
The flip-style case from Incase looks to be a better alternative to the Apple branded accessory.