So, I get home and give it a try. This little rubber thing is awesome! I can't mathematically or scientifically back up the 10 TIMES MORE sound claim, but with the iPhone placed inside of the Egg Beat, the sound is louder. Neat.
I'm planning to carry this around in my purse for those impromptu parties in No Man's Land sans electricity. o.O
Iphone 4/4s & 5 compatible