Speaker Tests
Speaker Test
Check left, right, stereo, bass, treble and run a full frequency sweep.
Start testBass & Subwoofer Test
Play bass tones from 20 to 200 Hz and slow sweeps for subwoofers.
Start testLeft Right Audio Test
Find swapped or dead channels and check stereo balance.
Start test5.1 Surround Sound Test
Play each surround speaker on its own: front, center, rear and subwoofer.
Start testSpeaker Cleaner (Water Eject)
A 165 Hz tone that helps push water and dust out of phone speakers.
Start testHeadphone Tests
Headphone Test
Channels, phase, bass and frequency range for headphones and earbuds.
Start test3D Sound Test
Binaural sound that circles your head – check spatial audio on headphones.
Start testHearing Age Test
High frequency hearing test with the mosquito tone – estimate your hearing age.
Start testAudio Utilities
Tone Generator
Any frequency from 1 to 20,000 Hz in four waveforms.
Start testWhite Noise Generator
White, pink and brown noise with a sleep timer.
Start testMicrophone Test
Live level meter and spectrum to check your mic, nothing uploaded.
Start testBrown Noise Generator
Deep, soft brown noise for sleep and focus, with a sleep timer.
Start test432 Hz Tone
A steady 432 Hz tone for tuning, listening or meditation, with a timer.
Start test440 Hz Tone (A4)
Standard tuning pitch A4 = 440 Hz for tuning instruments and testing audio.
Start test528 Hz Tone
A clean 528 Hz tone with a timer – no ads or background music.
Start testWhich test should I use?
- Sound only from one side, or no sound? Start with the Speaker Test or the Left Right Audio Test.
- Checking new headphones or earbuds? The Headphone Test covers channels, wiring polarity, bass and range.
- Setting up a subwoofer or car audio? Use the Bass & Subwoofer Test.
- Need one exact frequency? The Tone Generator plays 1 Hz to 20,000 Hz.
- Mic not working on calls? Try the Microphone Test.
- Need background sound for sleep or focus? Open the White Noise Generator.
All tools are free, work on phones and computers, and generate their sounds on your device. Start with a low volume and raise it slowly.