Test your speakers or headphones with reference tones at different frequencies. Verify left/right channel balance, detect audio distortion, and ensure your audio output device is functioning properly. Useful for troubleshooting audio issues.
Human hearing ranges from 20Hz (low bass) to 20kHz (high treble). This tester plays tones across the full frequency spectrum, helping you identify if your speakers are missing certain frequencies or if there's channel imbalance. Professional audio engineers use similar tests to calibrate studio monitors.
Start with the live tester below. Supporting details, FAQs, and troubleshooting guidance are placed after the tool so the main action is easier to find and use immediately.
Play a test tone to verify your speakers or headphones.
Common problems
If the live tester does not behave as expected, these are the first checks most users should try before assuming the hardware is broken.
Test left and right channels separately - ensure stereo balance
Test different frequency ranges - bass, mid, and treble
Use quality headphones for accurate testing
Test at different volume levels - check for distortion
Test your speakers or headphones with reference tones at different frequencies. Verify left/right channel balance, detect audio distortion, and ensure your audio output device is functioning properly. Useful for troubleshooting audio issues.
Human hearing ranges from 20Hz (low bass) to 20kHz (high treble). This tester plays tones across the full frequency spectrum, helping you identify if your speakers are missing certain frequencies or if there's channel imbalance. Professional audio engineers use similar tests to calibrate studio monitors.
Test your keyboard input, detect dead keys, and verify all keys are working correctly.
Test mouse buttons, scroll wheel, pointer tracking, and touch input.
Test your microphone input levels in real-time. Verify microphone is working.
Test your webcam, verify camera works, and check framing.
Helpful questions
Use these answers to understand results, browser limitations, permissions, and sensible next troubleshooting steps.
First confirm the browser tab is not muted and that your operating system is sending audio to the correct output device. Then check whether Bluetooth headphones, external speakers, or HDMI audio were selected automatically. Browser-based tests often reveal routing issues that are hidden when another app is using a different audio output.
Listen to each channel separately and compare the perceived loudness. If one side sounds weaker, quieter, or distorted while volume settings are equal, the imbalance may come from the headphones, the speaker placement, the cable, or the operating system balance settings.
A single tone cannot show whether your speakers or headphones are missing bass, midrange, or treble detail. Testing several frequencies makes it easier to spot rattling, distortion, weak bass response, or harsh highs that only appear in part of the audible range.