Stereo Frequency Tester
Craft precise binaural tone tests. Adjust individual channel frequencies, sync the output, and fine-tune volume.
Left channel440 Hz
Right channel440 Hz
DifferencePerfectly matched
Volume25%
Channel controls
Fine-tune each channel and listen instantly. Buttons toggle the respective channels, while “Play both” keeps them perfectly in sync.
Frequency range
20 Hz – 20000 HzBinaural offset
NoneLeft channelPaused
440Hz
Right channelPaused
440Hz
Master controls
Keep the master slider conservative to prevent clipping. Increase gradually once you verify your playback device handles the current frequencies comfortably.