Hear your headphones the way you want, or voiced like another headphone entirely. Then actually listen and choose. The audition is free, no subscription.
Measurement sites can tell you what your headphones do. None can tell you what they dofor you, and none let you actually hear the difference.
A frequency-response curve is a chart to read, not a thing to hear. Two people looking at the same line want two different tunings, and neither can tell from the graph.
Harman. Diffuse-field. Neutral. Every tool hands you one preset curve and calls it right. Your gear and your taste never got a vote.
Most tools stop at data and presets. The one thing that matters, hearing it on your music and choosing, is left to you.
The graph becomes the surface you're hearing through, not a chart you're reading. Everything runs in real time on your own music.
Search a curated library of popular wired cans & IEMs. Pro adds importing your own measurement (CSV, AutoEQ, squig).
A blind, loudness-matched face-off plays on the track you're already hearing. Just tap the one you like. A or B?
Each choice nudges a personal offset. Watch your curve build on the graph. Bespoke, not a canned preset.
Flip Stock ⇄ Yours to hear what you gained. Save the profile per headphone, then listen for real.
Six quick choices (A or B?) on your own music, gain-matched so loudness never tips your hand. No sliders, no theory. You do the deciding.
Curious how a different headphone is voiced? Match its tonal signatureand hear how that balance would sit on the headphones already on your head: blind, loudness-matched, on your own music.
Built by people who've spent a career measuring headphones and building the tools to compare them honestly — side by side, level-matched, with no hype in between.
The same work continues in Attune, powered by Warren Labs' shipping Level correction engine: the loudness-matched, click-free DSP trusted in the studio. A Warren Labs product.
Free correction presets are everywhere, and they are good. What a preset cannot do is play you your own music, blind and loudness-matched, and let you pick. That part is free here, and so is keeping what you find. Pro is a one-time unlock for people who want more than one profile and want to take their curve elsewhere.
Requires macOS on Apple Silicon (M1 or later)
Bring your own headphones and the music you know. In under a minute you'll hear the difference. It's free, and it's coming to the Mac App Store.
Requires macOS on Apple Silicon (M1 or later)