AUDIO TESTER / INFORMATION
Sound safety
Start quiet. Keep tests brief. Stop at discomfort. This site cannot measure the loudness reaching your ears or guarantee that a setting is safe for your equipment.
Before you press Play
- Reduce your device or amplifier volume first. Use a comfortable level; do not start at maximum.
- Check which headphones, Bluetooth speaker, receiver or built-in output is selected.
- Keep headphones quiet and remove them if sound is uncomfortable. Use headphones during microphone playback to reduce acoustic feedback.
- Stop immediately at pain, ringing, distortion or rattling. Take a break rather than repeating a louder test.
Low frequencies need extra care
Deep tones may be inaudible on small speakers even while the hardware is working hard. Increasing gain can stress a driver or amplifier. Never treat the bass test as a maximum-volume or speaker-excursion challenge. Begin with the 80 Hz preset and keep the same low level while comparing.
A percentage is not a decibel reading
Our level setting is digital gain. It does not measure environmental sound pressure and is not a calibrated safety threshold. The same setting can produce different loudness on different systems. Exposure also depends on listening time.
Listening observations are not a diagnosis
The frequency check cannot provide an audiogram, a hearing age, or a diagnosis. If a tone is missing, your equipment or settings may be responsible. Seek professional advice for hearing concerns or sudden changes; do not use repeated online tones to investigate symptoms.
Visual comfort and photosensitivity
Channel indicators switch between steady states without strobe effects. We respect reduced-motion preferences. If visual motion is uncomfortable or you are sensitive to changing visual patterns, stop the test and avoid watching indicators while listening.