StereoTest Blog
Make sense of
what you hear.
Practical guides for better channel checks, headphone listening, and speaker setup.
Latest guide
Audio basics & troubleshooting
Android audio
How to enable stereo sound on Android
Turn off Mono audio on Android, check left and right playback, and troubleshoot Bluetooth call mode, uneven earbuds, and USB-C audio.
Read the guideAudio basics
Read the guide What is stereo? How left and right audio work
Understand stereo sound, why voices can seem centered, and how headphones differ from speakers. Hear the difference with a simple left and right test.
Troubleshooting
Read the guide How to combine left and right audio channels
Combine left and right audio channels for one-ear listening, a mono file, or a single speaker. Follow practical steps and check for missing sound.
Hear something unexpected?
Check Left, Both, and Right before changing your setup.