Egg Shaped Sound Amplifier Dock for iPhone 4/4S. This amplifer is a good tool for you to enjoy a louder and clearer sound when listening to music, watching videos, hands-free answering calls. You can also charge your iPhone while connected. This dock also supports your phone vertically and horizontally. Effectively amplifies your favorite music. The silicone Egg Shape Amplifier is available for 5KD at CavaratMall.