Speaker & Headphone Test
Test left and right channels, run frequency sweeps and generate tones · free, no signup
Free Speaker and Headphone Test — Left, Right, Bass and Frequency Sweep
Find out in seconds whether both speakers or both headphone drivers work and are wired the right way round. Press Left, Right or Both and a test tone plays through only that channel, with plain-language feedback about what you should hear. A full test runs left, right and both in sequence.
The tone generator plays sine, square, sawtooth and triangle waves or pink and white noise from 20 Hz to 20 kHz on the channel you choose, with presets for bass, midrange and treble. A 12-second frequency sweep shows how low and how high your speakers, headphones or ears can go. Volume starts low for safety and everything is generated in your browser.
Key features
Left / right / both
Channel test with clear on-screen guidance.
Tone generator
Sine, square, sawtooth, triangle, pink and white noise.
Frequency sweep
20 Hz to 20 kHz over 12 seconds with a live readout.
Safe volume
Starts quiet with a limit on maximum level.
How to use it
- Turn your system volume down, then press Left, Right or Both.
- Check the sound comes from the correct side.
- Try the sweep or a bass preset to hear the range.
- Change the wave, channel or frequency to test more.
Worked example
Example
Left → sound only in the left ear/speaker ✓. Right → only right ✓. Bass 40 Hz barely audible on laptop speakers → normal, small speakers cannot reproduce it.
Who uses this tool
Headphone and speaker buyers
Check channels and range before returning a product.
Home-theatre and PC users
Verify left/right placement and cables.
Musicians and audio students
Learn how frequencies sound and find room resonances.
Tips for the best results
- Set your system volume low first — sweeps sound louder than music.
- If left and right are swapped, check your headphone cable and the balance setting.
- Use pink noise to check for rattles at different volumes.
- Test both with and without audio enhancements switched on.
Common mistakes to avoid
- Playing a high tone at high volume, which can hurt your ears.
- Testing Bluetooth audio that adds delay and channel processing.
- Assuming no sound at 20 Hz or 18 kHz means broken equipment — most speakers and adults cannot reproduce those extremes.
Why use AZRS QuickFix?
It is 100% free, needs no signup and has no watermark or usage limits. The tool runs in your browser, so what you type stays on your device, and it works on phones, tablets and desktops. New tools are added every week — bookmark this page or browse the full QuickFix toolbox.
Frequently asked questions
How do I test my left and right speakers?
Press Left, then Right. Each should play only from its own side.
What frequency range can humans hear?
About 20 Hz to 20 kHz for young people; the upper limit drops with age.
Why can I not hear the very low tones?
Small speakers and headphones cannot move enough air below about 60 Hz. That is normal.
What is pink noise used for?
Pink noise has equal energy per octave, which sounds balanced and is used for testing speakers and rooms.
Is it safe for my speakers?
Yes at the limited volume provided, but always start with your system volume low and increase gradually.
Does it work on a phone?
Yes — open it in your mobile browser and use the buttons.