4STREAM is an application wherein you can play different music with various genres for you to choose from. You can install this application on your smartphone and connect it with amplifiers that are created and designed together with 4STREAM. 

You'll have fun having this application because it has many features for you to explore. With this application, you can seamlessly control devices and play music based on your preference. You can also connect and synchronize you music on every 4STREAM Wi-Fi enabled devices. 

You can also group and ungroup different devices without difficulties. Now, you can control its volume, and change music from time to time. 

Lastly, this application is offered free and will not charge you with any hidden fees.