Speaker Boost is a lightweight piece of software which handles the job of boosting the sound volume of your speaker. It also works to increase the sound provided to your headphones if you don't like listening to your device's built-in speaker. The user interface of this tool is very simple. You can easily adjust the volume and boost levels by using the bars displayed on the screen.
From here you can also access the Settings section where you can configure certain aspects of the application. For example, you might not want to show the volume control and you can disable it here. Another important setting is the "maximum allowed boost" because higher levels of boost might cause damage to speakers, headphones, and even your ears. As you probably know, the more you boost the audio, the more its quality is going downhill.
You should go for the best balance you can possibly obtain, if you notice distorted audio, you can fix this problem by lowering the volume. Another positive aspect of this application is the fact that the boost is applied to voice call audio, as well.