Handy tools
Speaker Test
Check your speakers or headphones and confirm the left/right channels aren't swapped — right in your browser.
Check that your speakers or headphones work — and that the left and right channels aren't swapped. Play a tone through the left, right, or both sides, try low/mid/high pitches, a frequency sweep, or white noise.
Put on headphones for an accurate left/right check. Turn the volume up gradually — start low.
Tone
440 Hz
Free online speaker test to check that your speakers or headphones work and that the left and right channels aren't swapped. Play a tone through the left side, the right side, or both, so you can hear exactly which channel is which. Try low, mid and high pitches, a frequency sweep, or white noise to catch a blown driver, a dead side or a crackle. For an accurate audio channel test, put your earphones in and start at low volume. Everything runs in the browser — no download, no permission needed. Great for setting up new headphones or troubleshooting a stereo system.