C&E CNE94908 iPhone 5 Sound Amplifier - Non-Retail Packaging - Black This cool accessory is great to have at poker games, picnics, or anywhere you want to enhance your iPhone 5's sound without using added power. Made from silicone material, this sound amplifier requires no wires or added battery power. Improve, enhance and amplify the sound of your phone with this iPhone 5 Sound Amplifier. Using old-fashioned acoustical science, this sound amplifier adds up to 12 decibels of sound pressure to your iPhone 5's speakers. Compatible with the Apple iPhone 5 phone model.