Stereo Audio Left / Right Channel Separation Tool
Test left and right headphone audio channels, stereo speaker balance, and acoustic driver fidelity online with synthesized acoustic test tones.
🎧 Stereo Sound Left / Right Channel Balance
Put on your headphones or earphones. Click the buttons below to verify channel separation and identify speaker driver imbalance.
Did you hear audio on both left and right sides clearly?
DIAGNOSTIC STATUS: READY TO TEST
Click Left Channel or Right Channel to play 440Hz test tone.
Diagnosing Headphone Audio Balance & Speaker Driver Failure
Earphones and studio headphones frequently suffer from cable strain or blown acoustic voice coils resulting in one side sounding significantly quieter than the other. Use our synthesized stereo test tones to isolate channel bleed, inverted polarity, and driver degradation across left, center, and right soundstages.