SimplyVibe SV-X3 Sport Premium FM Player & Portable Speaker, works w/ iPad, iPod, iTouch, iPhone, MP3 Players, Laptops (Mac/ PC) with Arm Band (USB or Rechargeable Lithium Powered)
I bought this to amplify the sad and barely audible speaker on the iPad 2, but it doesn't seem to work. However, it works great with my iPod. It's light and a little longer than a standard computer mouse and it has a lot of features packed into a compact size, with the capacity for FM, an SD card slot and auxiliary input. The sound quality isn't exceptional, but it's clear.