Speaker Test — Check Left/Right Channels & Frequency Response
Verify that your speakers work by playing test tones through theleft and right channels, and sweep across bass, mid, and treble frequencies to gauge frequency response. All tones are synthesized locally with the Web Audio API — nothing is downloaded or streamed.
Perfect before a call, online meeting, music session, or to diagnose which speaker is failing on a laptop or stereo setup.
Speaker Test FAQ
Does this work on all browsers?
Our mobile testing tools work best on modern browsers (Chrome, Firefox, Safari, Edge). Some features may not be available on older browsers that lack Web API support.
Is my device data collected?
No. All device information is read locally from your browser APIs. No data is transmitted to our servers or stored anywhere.
Is it free to use?
Yes. This tool is completely free with no usage limits, sign-up requirements, or hidden fees.