Headphone burn-in isn't real (2024)

Even though I’m supposed to keep you reading for as long as I can, if you just clicked this link and internalized the title, you’ve absorbed everything you need to know. Seriously. Burn-in isn’t a concern for new headphones.

This is probably one of the most popular audio myths of all time, so a large segment of audiophiles will swear up and down that this is a make-or-break part of the headphone experience. It’s not, but like any good myth, it’s centered around a kernel of truth. A teeny, tiny, almost imperceptible kernel of truth.

So far, all the tests performed by various online outlets haven’t yet found objective data to support the idea that headphone guts actually change audibly over certain periods. Many manufacturers won’t comment on this phenomenon; if they do, they shy away from telling audiophiles that they’re wrong.

Editor’s note: this article was updated on February 26, 2024, to expand the discussion on sensory information.

Now, that’s almosttrue: your headphones’ drivers and housings will lose rigidity over time, but it won’t cause an audible change in the measured performance of the headphones—at least, not for the better. Larger loudspeaker drivers see larger amounts of material change over time, specifically in the surroundings, the part subjected to most of the flexing action. This area of the transducer is quite different in headphone drivers, and the amount of everyday use it would take to affect sound quality in a measurable way for headphone drivers is ridiculous. In fact, much of the objective “evidence” for this phenomenon is shown on charts with a scale of 1dB or less (i.e., insignificant).

The concept of “burning in” speakers stems from a simple quality assurance test performed by manufacturers where they drive speaker components for hours to see if they hold up under sustained use. The idea is that if the performance changes or degrades significantly during that period, the product quality needs to be improved. That makes sense—they do this for cars, cameras, and other machines, so why not headphones?

A change in sound that’s dramatic enough for you to hear would be cause for concern. If your headphones change in sound over a short period, like 50 hours, do the materials magically stop losing rigidity? Nope. A loss of rigidity in speaker materials would also mean the speaker would take longer to stop moving. That would result in degraded impulse response and ringing. This “burn-in” theory doesn’t make a lot of sense.

If I sound like a crank, I am—but you should listen to me. For those who don’t know, I tested audio products for USAToday for over five years. I used a Type 4128-C Head and Torso simulator, state-of-the-art measurement hardware, and industry-standard audio analysis software. I logged thousands of hours testing headphones on that fixture and learned a lot about the nature of objectively testing audio at that time.

Headphones require a seal in order to perform their best, and a poor fit will wreck bass reproduction and increase noise and leakage.

Now that we test headphones in a similar fashion here at SoundGuys, what causes us the most grief, annoyance, and botched tests is how even slight variations in fit alter what reaches your ears to a gigantic degree. It’s pretty incredible, really. Headphones require a seal in order to perform their best, and a poor fit will wreck bass reproduction and reduce isolation. When we test headphones that don’t fit correctly because the foam is too stiff—and therefore wouldn’t conform to the head—the measurements suffer immensely. I hate testing on-ear headphones because it’s unbelievably difficult to get good data without long periods of trial and error. With this in mind, let me paint you a picture of what might be happening here.

Ever put a butt-print in your couch that doesn't go away because you sit in it every day? This is exactly the same thing.

The reason is that the cushion material in most headphone ear pads is a form of viscoelastic foam. Viscoelastic foam has a fun property called “relaxation,” where, over time, it becomes less and less able to hold its original shape or resist force than it used to. Ever put a butt-print in your couch that doesn’t go away because you sit on it every day? This is exactly the same thing. Relaxation can be accelerated by heat and is one of the reasons memory foam mattresses get less firm the warmer they are. This happens faster with cheaper padding like what’s in your headphones.

A set of headphones with relaxed ear pads will fit your head better simply because it will conform better to your noggin’s natural contours. A better fit means a better seal, and not only will isolation be far greater, but the headphones will sound much better, too—headphone responses are tuned with the expectation of a proper acoustic seal. Given that most of the hours I spent testing were wasted on trying to get a good fit on that damned dummy head: a good fit is the most important thing when it comes to headphones.

I don’t expect you to just blindly trust me, so take this example. I acquired a test head and used a set of over-ear headphones to test frequency response. First, I measured a target of 84dB(SPL) like usual; then, I put glasses on the head like a human being and measured again. The headphones stayed put, and I used painter’s tape to guide positioning.

So these headphones are fairly bassy (pink) and said bass notes are louder than the green mids. This is the most important part of most music, so we’re focusing on that left part of the chart for now. This chart will serve as our control: what a good seal will give you. But let’s see what happens when the variable of glasses causes your headphones to have an imperfect seal in the exact same position.

Yikes. That imperfect fit dropped those bass notes from 10-20dB below their original reading. To your ears, those notes will sound half to one-quarteras loud as they would with a perfect fit. That’s a huge, super-noticeable change in audio quality. While the changes in ear pads from brand new to broken-in won’t be this dramatic in most cases, it’s definitely something that could alter your listening experience—because it measurablydoes.Remember, it only takes a tiny air leak to compromise the seal.

Looking at the charts stacked on each other, you can see the difference more clearly. Keep in mind, this isn’t even an extreme example, just a common one. Over time, the viscoelastic foam will stop resisting so much against the glasses and your head, bringing the sound ever closer to that control reading. The more you use your headphones, the better they’ll sound. This is a much larger difference in sound than 1dB here or there by alleged burn-in advocates.

Now, if there’s a ringing or noise or any other audible artifact causing you pain or ruining your music, definitely return your headphones. But if the sound is most of the way there and not too far off from what you want, you may find that minor quibbles disappear over time. This is especially true with headphones that measure very well. Additionally, with headphones that are more or less “neutral,” there’s always the possibility of equalizing them to suit your tastes, so don’t sleep on the frequency response charts we post in most reviews. These plots will help you understand what you’re listening to and what changes you may want to make.

You bought those headphones to enjoy, so go do it already!

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