Left & Right Headphone Test
Check whether audio plays through the expected left, right, or both headphone channels.
Listening safety: Begin at a low or moderate volume and stop if the signal feels uncomfortable.
LEFTL
0.0 dBLeft ear
STEREO
RIGHTR
0.0 dBRight ear
Audio signal stopped
How to use this test
- Select LEFT, RIGHT, or BOTH.
- Start the selected signal with an explicit click or tap.
- Confirm the sound comes from the expected side, then stop playback.
What this checks
- Channel orientation and cable or Bluetooth routing.
- A silent or intermittent headphone driver.
- Obvious unintended sound from the opposite channel.
Related headphone tests
Want more device checks?
Open the full Device Lab for stereo, balance, phase, noise, and other playback-device checks.
Open Device LabFrequently asked questions
What if left plays on the right?
Check the headphone orientation, cable connection, operating-system channel settings, and any adapter in the signal path.