100 Hz Tone
Continuous 100 Hz reference tone — play instantly in your browser.
Fixed frequency: 100 Hz (Bass reference)
Download a 100 Hz reference WAV (2 seconds, 44.1 kHz).
What this tool does
A 100 Hz tone vibrates 100 times per second. A low bass reference for speaker and headphone testing. This page locks the frequency so you can listen, compare equipment, or export a WAV without adjusting sliders.
How to use it
Tap Play to unlock audio (required on mobile browsers). Start at low volume, especially with headphones. Switch waveform to hear how harmonics change timbre while the fundamental stays at 100 Hz. Use Download WAV for an offline reference file.
Practical applications
100 Hz sits in the audible range for equipment testing and reference listening. Use it alongside our tone generator hub for nearby frequencies or our test tone download for offline files.
Frequently asked questions
Why test at 100 Hz?
100 Hz is a common bass-mid checkpoint that most systems reproduce clearly.
Is 100 Hz good for subwoofer tests?
It checks upper bass response. For deeper tests, try 40 Hz or our Bass Test Tones page.
Last updated: September 2025. Technical values (Hz) are locale-invariant.