Play low-frequency tones to compare what you can hear through your speakers or headphones. This is a subjective playback check, not a calibrated frequency-response measurement.
Test your speaker or headphone bass response across frequencies from 20 Hz to 200 Hz. Play each tone to check whether your audio equipment reproduces low-end frequencies. Subwoofers and bass-heavy headphones will reproduce the lowest tones; laptop speakers typically roll off below 80–100 Hz.
Use headphones or speakers with good bass response. Not suitable for laptop speakers. Keep volume moderate — very low frequencies at high volume can damage speakers and hearing.
The bass test uses the Web Audio API'sOscillatorNodeto generate pure sine wave tones at 10 frequencies from 20 Hz to 200 Hz. Each tone is played directly through your connected audio output. If your speakers or headphones can reproduce a frequency, you will hear it clearly. Frequencies that roll off sharply will sound noticeably quieter or inaudible, revealing your audio system's bass extension limit.
Felt rather than heard. Requires a dedicated subwoofer or high-quality headphones to reproduce. Found in organ, electronic music, and movie effects.
Core subwoofer range. Kick drum fundamentals, bass guitar, low synthesizer notes. Most desktop speakers and quality headphones reproduce this range.
Warmth and punch. Upper bass guitar, bass vocals, lower piano notes. Reproduced by most speakers except very small laptop speakers.
Body and fullness. Reproduced by nearly all speakers. Excess here causes muddy, boomy sound; too little creates a thin, weak sound character.
More free tools to check your setup.
Test speakers, headphones, left/right stereo channels, frequency sweep, bass, and microphone input online.
Non-calibrated browser hearing range screening with tones from 125 Hz to 16000 Hz. Compare left/right perception and learn when a clinical audiogram matters.
Test headphone channel balance, frequency sweep, and phase response. Verify left/right audio and stereo imaging.
Test individual speaker channels including left, right, center, and surround. Verify each speaker in a multi-channel setup.
Free microphone test online. Check mic input level, peak clipping, and live waveform in your browser.
Guides on subwoofers, bass response, and low-frequency audio.
Run a quick left right audio test to catch swapped channels, mono output, or a silent side before blaming your headphones or speakers.
Use a browser stereo test, Windows or macOS checks, and a few hardware swaps to find out whether your problem is reversed channels, mono output, a dead side, or bad balance.