How do I test the speakers on my phone?
Turn off Silent mode, raise the media volume and play Left, then Right. Phones have one speaker at the top and one at the bottom, so cover one with a finger to hear the other clearly. Run a sweep to catch crackle at certain pitches.
Why does one AirPod or earbud sound quieter?
The usual causes are earwax on the mesh, the Balance slider on your phone, or Mono Audio switched on. Clean the mesh gently, check those settings, then reset and re-pair the earbuds. If the same side stays quiet on another phone, the earbud needs service.
Can I test my TV or soundbar with this page?
Yes. Open the page in your TV's web browser, or connect a laptop to the TV with HDMI and send the sound to the TV. Set the TV's sound output to the soundbar first, usually HDMI ARC or eARC.
How do I test car speakers with my phone?
While parked, connect your phone with Bluetooth, CarPlay or Android Auto, set balance and fader to the centre and play Left and Right. Use the fader to check the front and rear speakers, and the bass tone to check a subwoofer.
Why does my Bluetooth headset sound like a phone call?
It is probably using the hands-free profile, which is built for calls and has low quality. On Windows, choose the Stereo or Headphones output instead of Hands-Free, and close apps that are using the headset microphone.
Do laptop speakers really play stereo?
Most do, with one speaker on each side, but they are close together so the stereo effect is small. Listen near each side of the keyboard during the Left and Right test, or use headphones for a clearer check.
Does the test work on every brand?
Yes. The tones are made in your browser, so they play on any speaker, headphone or earbud your device can use. Brand apps, EQ and spatial audio can change the sound, so turn them off for the cleanest result.
Is my audio recorded or uploaded?
No. The test only plays sound. Nothing is recorded, and nothing leaves your device.