The setup
In 1939, an international panel decreed that A above middle C should ring at 440 Hz. Some say this was a metric correction. Others say it was a psy-op designed to keep the masses slightly restless, mildly suggestible, and perpetually overpaying for tuners.
The dissidents tune to 432 Hz, claiming it resonates with the heartbeat of the planet, the spiral of seashells, and the snoring of a well-fed corgi. Dr. Glund has no opinion. He simply hands you both tones and a blade.
Listening lab
Tones are generated locally. Mute by closing this section, or by closing your ears.
Site sound is muted. The tone generator below works regardless — but keep your volume gentle.
Pass judgement
How dangerous did that feel?
Verdict
We have, after extensive listening and exactly zero peer review, concluded: both tones are real and both will haunt you. Use whichever your gear allows. Tune your spine first, your strings second.
— Dr. Glund:Indulge the senses… or face the blade of judgement.