GuidesNovember 29, 20257 min read
Audio Balance Test: Fix Headphones One Side Quieter (Win 10/11)
Is one side of your headphones louder than the other? Use our Audio Balance Test to diagnose uneven sound and fix L/R balance in Windows.
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Audio Tester
Verify channels, sweeps, and mic input
Front-end only audio suite: stereo callouts, manual sine tone and logarithmic sweeps, white/pink noise references, plus microphone level and peak meters.
Channels & reference signals
Waiting for input
Playback visualizer
IdleShows live output energy for tones, sweeps, channel callouts, and noise playback.
Single sine tone
20 Hz - 20 kHz440 Hz
Log sweep
20 Hz - 20 kHzOne click sweep from sub-bass to upper treble to check frequency response and resonances. Great for finding rattling objects on your desk or testing subwoofer bass response. Default duration 9 seconds.
Reference noise
Microphone levels
Browser will request microphone permission; processing stays on-device, nothing is uploaded.
Live level0%
Peak hold0%
Click "Start monitoring" to grant mic access and view levels and peaks.
Quick tips
- Alternate mode quickly checks if left/right channels are mapped correctly.
- Use sweeps to catch bumps or rattles; spikes may indicate resonance or distortion.
- White noise highlights hiss; pink noise mirrors typical music spectrum.
- Avoid maxing mic gain- aim for peaks around 70-90% to reduce clipping risk.
Audio Test FAQ
Quick answers about stereo channel checks, noise types, and fixing L/R balance.
How to test Left and Right stereo channels?
Use the Left channel and Right channel buttons on our Audio Tester. If sound comes from the wrong side, your headphones are reversed. If sound comes from both sides simultaneously, disable Mono Audio in your system settings.
What is the difference between Pink Noise and White Noise?
White noise has equal energy per frequency (sounding harsh/bright), while Pink noise decreases in energy at higher frequencies (sounding balanced/natural). Pink noise is better for testing speakers and room acoustics.
How to fix uneven headphone volume (Audio Balance)?
Play a constant 440Hz sine tone using our tool. If the sound is louder in one ear, go to your sound settings and adjust the Left/Right balance levels independently.
Latest Audio Testing Guides
Check speakers, headphones, and mics—stereo balance, sweeps, noise tests, and setup tips.
GuidesNovember 29, 20257 min read
Stereo vs. Mono Audio Test: Are You Getting True Surround Sound?
Does your audio sound flat? Use our stereo vs mono test to see if you are stuck in mono and learn how to fix it on Windows and Bluetooth headsets.
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GuidesNovember 29, 20257 min read
Left and Right Audio Test: Check Stereo Channels Online (L/R)
Check if your headphones are reversed or stuck in mono with our free left and right audio test and quick fixes for channel issues.
Read Article