We’re growing the Archive with our own measurements — and the fastest way to get a headphone in is for the people who own one to mail it to us. You get your unit’sexact curve back, points toward your level, and a permanent, credited page. We insure it both ways and send it home within days.
Measured here on a miniDSP EARS Pro, labeled by rig, published honestly. No pay-for-praise.
Not “the” HD 650 — yours. Unit variation is real, and knowing how your specific pair measures is exactly what Attune turns into a personal tuning.
Every published measurement earns points — more for a model we haven’t measured yet — building your level and your place on the contributor board. What they unlock down the road, we’ll shape with the community.
Published measurements carry a credit line — “unit courtesy of you” — on a permanent product page built to rank. Prefer to stay anonymous? Just say so.
First-party, honest, community-owned. Each headphone you send makes the Archive a little more complete for the next person — and a little more ours.
Your part is a minute of typing and a trip to the drop-off. We handle the label, the insurance, the measurement, and the return.
Fill in the form below — make, model, and how to reach you. Takes a minute.
You get a prepaid, insured return label, our address, and simple packing notes by email.
Box it up and send it. It’s insured to the value you declare, door to door.
It goes on the rig, gets an honest page in the Archive, and heads back to you within days.
Your unit’s exact measurement lands in your inbox, with points and credit on your profile.
You declare the value; we insure to it, inbound and outbound. We photograph condition on arrival and before return.
Measured and shipped home within about five business days of arrival. If anything will run long, you hear it first.
We publish exactly what we measure. If we can’t trust the data or the unit arrives damaged, we tell you why and don’t publish — you still get your curve.
A word on the rig. Your headphone is measured on our own bench (a miniDSP EARS Pro) and labeled that way. The Archive’s older curves came off a Head Acoustics HMS II.3 — a different system — so we keep the two clearly separated rather than pretending a single measurement is the last word. One unit is one unit, not the whole model.How to read the graph →
Tell us what you’ve got and how to reach you. We’ll email a prepaid, insured label and where to send it — no charge, no card.
A loaner gets your headphone an honest measurement and a permanent page built to rank for “model frequency response” — a durable marketing asset, not a one-off review. We cover shipping both ways, insure it in transit, and send it back the day the page goes up. Pick “A brand or retailer” in the form and we’ll take it from there.
Arrange a loanerNo. We email you a prepaid, insured return label and cover shipping both ways. If you would rather not pay to ship it to us either, ask — we prepay inbound for local and community contributors.
Yes, both directions. You tell us the value, we insure to it, and we photograph the unit on arrival and again before it ships back — documented, not a gotcha.
We measure and ship it back within about five business days of arrival. If anything will take longer, we tell you before you send it.
We publish it anyway. Honest graphs are the whole point — we show exactly how a headphone measures, good or bad. What we will not do is dress it up.
Sometimes a unit arrives damaged, won’t seal on the rig, or gives data we don’t trust. If that happens we tell you why, you still get your unit’s curve, and we simply don’t publish it.
No account is required to send one in. Points, your level, and your on-page credit ride on a free community profile, so making one is just how they attach to you — the measurement and your curve are yours either way.
Over-ear and on-ear headphones, and IEMs where the rig takes a proper seal. If you’re not sure yours qualifies, tell us in the form and we’ll say.
The Archive’s older curves were measured on a Head Acoustics HMS II.3. Your headphone is measured here on our own rig (a miniDSP EARS Pro) and labeled as such. We don’t silently mix the two — they’re different measurement systems, especially up in the treble.