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Speaker Test
Verify left, right, and stereo output with guided test tones.
Left plays 440 Hz on the left channel only. Right plays 523 Hz on the right channel only. Stereo sends both tones together.
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How to use
Adjust settings
Use sliders and controls to set frequency, volume, and waveform. Changes apply in real time.
Export or share
ダウンロード a WAV file or copy a share link. All processing stays on your device.
Frequently asked questions
How do I test if my left speaker works?
Click Test Left — audio routes to the left channel only.