Mangobeat Natural Wooden Acoustic Speaker

Here is another passive speaker that amplifies the sound coming out of your phone without any electricity. The Mangobeat has a natural wood construction. It doesn’t require a Bluetooth connection to work. Simply put your phone on it, and the rest is easy.

This passive speaker can amplify the sound up to 8 times depending on your phone. You can order this in two sizes. More information is available here.