Are the iPhone's speakers not loud enough for you? Well, you could purchase some external powered speakers or you could completely forgo the power and just use simple acoustics to amplify the volume when you slide your iPhone into this cool new Megaphone by en&is. This ceramic passive amplifier looks like a massive horn and is designed to amplify and optimize the best sound output when the iPhone's speakers are pointed down into it. This stylish sculptural amplifier is a unique way to listen to music or talk on the speakerphone, but if its steep price turns you off, you can also place your iPhone down in a large glass to get a similar volume boost for free, it's just not as cool.
Megaphone - Passive Ceramic iPhone Amplifier