Stereo Test - Left and Right is an app to test which speaker/earbud is left and which is right. Some earbuds, earphones, or speakers don't provide clear information or correct information about which is left and which is right, and this can be a problem as we need to place speakers or earbuds in the right position when watching movies and even playing games. How to use: 1. Click the start button 2. You will hear "LEFT" sound from the left speaker/earbud, "RIGHT" sound from the right speaker/ea