Speck CandyShell AMPED Case for iPhone 5 Review @ TestFreaks
 

"For today's review we will be looking at one of the latest iPhone 5/5S cases from Speck. The CandyShell series is one of their best selling lines and features several variants deriving from a general form factor and design. The Speck CandyShell AMPED has the appearance of a regular Candyshell case with a slight increase in bulk. This new model is devised for sound amplification by using the body of the case as a sound chamber. By using the case as a sound amplifier it doubles the volume of the iPhone without causing any extra battery usage. In addition the Speck CandyShell AMPED still meets or exceeds military standards for falls and drops."

http://blog.testfreaks.com/review/re...-for-iphone-5/