Unorthodox Ops

The 432 Test

Same song. Two tunings. Almost all music is tuned to A440 — the modern standard. A432 is the older tuning a lot of listeners swear sounds warmer and easier on the ear. Don't take anyone's word for it: press play, then flip the switch mid-song.

Now loaded

Gymnopédie No. 1 — Erik Satie

Demo track · 1 minute

You're hearing the original A440 version.

0:000:00

Tap play, let it run, then hit A432. Flip back and forth as much as you want.

🎧 Try it with your own song

Drag & drop an audio file here, or tap to pick one — MP3, WAV, M4A and most other audio files work. Use a song you know by heart; that's where the difference is easiest to hear.

Your file never leaves your device. It's decoded and played entirely inside your browser — nothing is uploaded, ever.

How this works

The A432 setting slows the recording by the exact 440 → 432 ratio (about 1.8%) — the classic varispeed method — so every note lands on the A432 tuning. Nothing else about the recording changes: same performance, same mix. Some listeners describe the result as warmer or more relaxed; others hear no difference at all. We make no medical or healing claims — this page exists so your own ears can decide.

Like what you hear?

432 Player does this to your whole music library — every song on your phone, retuned live, plus Living Visuals that move with the music, healing-frequency sessions, ambience layers and more.

Get the full player

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