Online diagnostic tool

Audio Tester

Check left and right speakers, stereo balance, frequency response and microphone input without installing software.

Speaker & microphone diagnostics

Speaker channel test

Verify left, center and right audio output, then run a safe frequency tone and microphone check. Keep your volume low before starting.

Safe low-volume toneHeadphones supportedBrowser-based

Left speaker

Confirm that sound plays only through the left speaker or left headphone channel.

Center / both speakers

Use this test to confirm both channels play evenly and remain balanced.

Right speaker

Confirm that sound plays only through the right speaker or right headphone channel.

Tone generator

Frequency tone

440 Hz

Generate a steady tone to check clarity, distortion and comfort at a specific frequency.

Frequency

60 Hz440 Hz12 kHz

Input check

Microphone test

Private in your browser

Check whether your microphone responds properly. Audio is not uploaded by this page.

Live levelSpeak normally and watch the meter rise.

Direct answer

What can the audio tester diagnose?

It helps you verify left and right speaker channels, stereo balance, audible tones and microphone response. Results are based on what your browser and connected hardware expose.

✓ No installation✓ Works in compatible browsers✓ Privacy-focused testing

Safe testing tips

Start at a low volume, especially with headphones.
Do not use high-frequency tones at high volume.
Stop immediately if a tone is uncomfortable.
Browser-based tests are observational and do not replace calibrated audio equipment.

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