How to Measure Earpads: Complete Guide for Replacements

Earpads wear out, compress, and crack. When they do, the headphones you’ve been enjoying start sounding different in ways that are hard to pin down until you pull off the old pads and realize they’ve flattened to half their original depth. Before you order replacements, knowing how to measure earpads correctly saves you from buying pads that look right in the photo but arrive the wrong size.

This guide covers the measurements that actually matter, what each dimension affects in fit and sound, and a curated set of earpad upgrades across several popular headphone families. Whether you’re replacing worn stock pads or deliberately tuning comfort and sound, getting the numbers right first is the move.

Why Earpad Measurements Matter More Than You’d Think

Three years into this hobby, one thing I consistently underestimated early on was how much earpads affect the listening experience. Replacing the stock HD600 pads after about 18 months of use, after they had flattened and the surface had started to crack, changed the seal and perceived low-frequency extension in a way I wasn’t expecting. The headphone didn’t sound broken before. It just sounded noticeably better after. Earpads matter more than most entry-level advice acknowledges.

For more on accessories that affect fit and sound, the Accessories section here covers cables, pads, and cases across a range of headphone categories.

The problem is that earpad sizing isn’t standardized. One brand’s “large oval” is another brand’s “medium round.” Measuring your existing pads, or the headphone’s driver housing opening, is the only reliable way to confirm compatibility before buying.

How to Measure Earpads: The Four Key Dimensions

Outer Diameter (or Outer Length and Width for Ovals)

Outer diameter is the total size of the earpad from edge to edge. For round pads, one measurement works. For oval pads, you need two: the longest axis (typically vertical) and the shortest axis (typically horizontal). This measurement confirms that the earpad physically fits the headphone’s mounting ring or housing.

Measure with calipers if you have them. A flexible fabric tape measure works for outer dimensions if calipers aren’t available, but calipers give you accuracy to the millimeter, which matters when clearances are tight. Round up rather than down when you’re estimating.

Inner Opening Diameter (or Inner Length and Width)

The inner opening is the hole your ear sits in. This is the measurement most directly tied to comfort and to whether the pad is circumaural (around the ear) or supra-aural (on the ear). Most full-size over-ear headphones use circumaural pads, and you need the inner opening to comfortably clear the outer edge of your ear.

A common comfortable inner oval is roughly 60mm tall by 40mm wide, but this varies by ear anatomy. Measure your existing pads’ inner opening and compare against listed specs for replacements. Community resources like the Crinacle pad database and individual Head-Fi pad comparison threads list inner dimensions for most popular third-party pads.

Depth (Pad Height or Thickness)

Depth is how thick the pad is from the headphone’s housing surface to the outer face of the pad. This dimension controls driver-to-ear distance, which has a documented effect on soundstage perception and frequency response, particularly in the upper midrange and treble.

Deeper pads generally create more perceived space and slightly reduce upper treble. Shallower pads bring the driver closer and can add presence and treble energy. Dekoni’s spec pages typically list depth alongside inner and outer dimensions. ZMF lists depth for their pad lineup as well.

Mounting Method

Before ordering, confirm the mounting method matches your headphone. Common systems include friction ring (Sennheiser HD 6XX family), bayonet/twist-lock (some Audio-Technica, some HiFiMan), double-sided tape (some Beyerdynamic), and screw or clip retention systems.

Aftermarket pads for popular headphones usually specify compatibility clearly. ZMF pads for the HD 600 family use the same friction ring system as stock. Dekoni pads are model-specific and designed to use each headphone’s original mounting method. Universal pads often require adapter rings, which ZMF sells separately for their Verite and Auteur lines.

Top Picks

The products below represent the current aftermarket earpad options recommend based on owner reports, verified buyer feedback, spec data from manufacturers, and community consensus across Head-Fi, ASR, and Resolve Reviews forums. Where noted, I have direct experience.

ZMF Headphones Universe Earpads for Headphones

The ZMF Headphones Universe Earpads are one of the few earpad upgrades I can speak to from direct experience. I run these on my HD600 and on the HiFiMan Sundara (2022 revision), and the comfort difference over stock Sennheiser pads is real and immediate. ZMF makes these in suede, cowhide, and lambskin options. Suede is the softest against skin for long sessions. Lambskin has a more supple feel that warms up with body heat. Cowhide is firmer and more durable.

On a neutral desktop chain, the Universe pads on the HD600 don’t dramatically reshape the sound signature. What they do is maintain better seal consistency as the session goes on, since they hold their shape and loft better than worn stock pads. I want to be honest here: the sound changes are subtle. This is primarily a comfort and material upgrade, with mild secondary effects on seal and low-frequency extension. Anyone expecting a wholesale tuning shift should adjust expectations.

The Universe pads fit the HD 600, HD 650, HD 660S, HD 6XX, and the Sundara family without adapter rings. That wide compatibility makes them one of the more practical premium pad options in this tier.

Check current price on Amazon.

ZMF Verite Earpads Premium Headphone Earpads

The ZMF Verite Earpads are ZMF’s larger, deeper cup design, intended for the Verite headphone but usable on other platforms via ZMF’s adapter ring system. Based on owner reports and ZMF forum threads, the Verite pads offer noticeably more internal volume than the Universe pads, which affects driver-to-ear distance and can shift the perceived soundstage width on headphones like the HD 650 or Sundara.

These are available primarily direct from ZMF Headphones at zmfheadphones.com. Amazon stock is not reliable for this model, and ZMF does sell out of specific material and color combinations. Verified buyers consistently note the material quality across suede, cowhide, and lambskin options matches ZMF’s headphone-level craftsmanship. If you’re after a deeper cup than the Universe pads provide, this is the tier to research.

Check current price on Amazon.

ZMF Auteur Classic Earpads

The ZMF Auteur Classic Earpads are designed for the ZMF Auteur Classic headphone but, per community reports, are usable on other platforms with appropriate adapter rings. The shape and internal geometry differ from the Universe and Verite pads, with owner descriptions noting a slightly different sound interaction when used on non-Auteur platforms.

Like the Verite pads, these are sold direct through ZMF Headphones and are not reliably found on Amazon. If you own a ZMF Auteur Classic and need replacement pads, this is obviously the first call. For buyers considering these as an aftermarket upgrade on Sennheiser or HiFiMan headphones, community threads on Head-Fi document various swap results across different headphone models. ZMF’s customer support has a good reputation for helping buyers match pads to platforms when the correct combination isn’t obvious.

Check current price on Amazon.

Dekoni Audio Elite Hybrid Earpads for Sennheiser HD600 HD650 HD660S HD6XX

The Dekoni Audio Elite Hybrid Earpads for Sennheiser HD600 are the most accessible premium earpad upgrade for HD 6XX family owners, available on Amazon Prime with no wait for direct orders. The Elite Hybrid construction uses a velour face (the part touching your skin) with a sheepskin leather outer ring and memory foam core. Verified buyers consistently report improved comfort over stock Sennheiser pads for longer sessions, particularly in warm listening environments where full leather against skin becomes uncomfortable.

The important caveat, and one that aligns with my own experience watching pad changes affect the HD600: the Elite Hybrid pads do shift the sound signature relative to stock Sennheiser pads. Field reports from HD600 and HD6XX owners on Head-Fi indicate the bass shelf rises slightly and the upper midrange changes character. This isn’t a reason to avoid them, but it is a reason to treat the swap as a mild retune and not just a like-for-like replacement. If you’re in a position to do measurements before and after (even simple ones with a calibrated microphone and REW), that comparison is worth making. The consensus across HD 6XX owner communities is that these are a legitimate upgrade for comfort-first buyers.

Check current price on Amazon.

Dekoni Audio Elite Hybrid Earpads for HiFiMan Sundara HE-400i

The Dekoni Audio Elite Hybrid Earpads for HiFiMan Sundara follow the same Elite Hybrid construction as the HD 6XX version, with a fit specific to the Sundara and HE-400i mounting system. Amazon Prime availability makes these easy to test and return if the result doesn’t work for your preferences.

The frequency response caveat is more significant on the Sundara than on the HD600, based on community reports and measurement data shared in Head-Fi Sundara threads. The Sundara’s stock pads are part of its tuning in a more sensitive way than Sennheiser’s design, and pad depth changes shift the FR measurably, particularly in the mid-bass and lower treble. Verified Sundara owners who have swapped to these pads report comfort improvements but also note the tonal balance shifts meaningfully. If Crinacle or ASR has posted comparative Sundara measurements with aftermarket pads, those are worth reviewing before committing.

Check current price on Amazon.

Dekoni Audio Elite Sheepskin Earpads for Beyerdynamic DT Series

The Dekoni Audio Elite Sheepskin Earpads for Beyerdynamic DT Series are designed for the DT 770, DT 880, and DT 990 families, covering Beyerdynamic’s most popular semi-open and closed-back platforms. Full sheepskin construction without a velour face gives these a different feel than the Elite Hybrid pads: warmer against skin, with better passive isolation improvement for the closed-back DT 770.

The sound signature effects on DT-series headphones with sheepskin pads are well-documented in owner communities. Bass increases as the seal improves. Treble, which can be fatiguing on the DT 990 Pro with stock pads, reportedly softens slightly with the sheepskin material and the change in pad depth. For DT 990 owners who find the stock treble presentation aggressive on their setup, this is one of the non-EQ modifications that field reports suggest produces a real, if moderate, shift. Spec data from Dekoni shows these are dimensionally matched to Beyerdynamic’s stock pad housing size, so fitment is a direct replacement.

Check current price on Amazon.

Dekoni Audio Elite Earpads for Audeze LCD Series Headphones Elite Velour

The Dekoni Audio Elite Velour Earpads for Audeze LCD Series address one of the most common comfort complaints about Audeze LCD headphones: the stock leather pads retain heat in extended sessions. I heard the LCD-X briefly at the Texas Audio Society meetup in Houston, about 20 minutes of demo time, not enough to form firm opinions on the sound, but enough to notice that the planar bass slam is genuinely impressive and that the leather pads would get warm fast in a long session.

Based on owner reports from Audeze communities on Head-Fi, the Elite Velour pads deliver a real comfort improvement for multi-hour listening. The trade-off, which verified buyers are consistently transparent about, is that velour seals differently than leather. Bass response changes with the reduced isolation, and the mid-bass character the LCD line is known for becomes slightly leaner. For listeners who run EQ or who prioritize long-session comfort over absolute bass impact, owner consensus supports these as a worthwhile swap. The direct LCD series compatibility means fitment is straightforward.

Check current price on Amazon.

Brainwavz Hybrid Memory Foam Earpad Black PU/Velour Large Over-Ear

The Brainwavz Hybrid Memory Foam Earpads sit in budget territory and represent genuinely good value based on community consensus across multiple headphone communities. The HM5-style pads have been a budget favorite for years, with a PU leather face and velour back surface sitting over a memory foam core. Verified buyers use these across AKG, Audio-Technica, and various HiFiMan models that don’t have dedicated aftermarket pad ecosystems.

The universal fit means some adaptation is required for certain headphones. The inner and outer dimensions are in a range that works for most large over-ear designs, but buyers should measure their existing pads and compare against Brainwavz’s published dimensions before ordering. Sound changes with these pads depend entirely on what they replace. On the ATH-M50x, for example, field reports suggest the deeper cup increases perceived soundstage width relative to the shallower stock pads. At budget pricing, the barrier to experimentation is low, and the memory foam comfort improvement over worn pleather stock pads is consistently noted as worthwhile.

Check current price on Amazon.

Buying Guide: What to Know Before You Order Earpads

The guide section in Accessories covers a range of headphone add-ons, but earpads have their own set of decisions that are worth thinking through before you commit to a purchase.

Matching Dimensions to Your Headphone

Outer diameter and inner opening size are the two numbers that determine whether a pad will physically fit and feel circumaural. Manufacturer spec pages for aftermarket pads usually list these. When they don’t, Head-Fi pad comparison threads often have community-measured data. Pull the pads off your headphone and measure the mounting ring inner diameter and the housing opening. These numbers are your baseline for filtering out incompatible options.

Depth is worth factoring in separately. Going from a shallow stock pad to a deeper aftermarket pad changes driver-to-ear distance, which affects upper midrange and treble character. This isn’t inherently good or bad; it depends on the headphone’s stock tuning and your preferences.

Mounting Method Compatibility

Not all aftermarket pads fit every headphone’s retention system. Sennheiser HD 6XX headphones use a friction ring system that third-party pads for that family are specifically built to match. Beyerdynamic DT-series pads use a different system. HiFiMan headphones use yet another approach. Buying a pad labeled for your headphone model is the safest path. Universal pads require checking whether adapter rings are included or sold separately.

ZMF pads designed for HD 600 or Sundara fit those headphones’ stock mounting without modification. Dekoni’s model-specific pads work the same way. Universal options like the Brainwavz HM5-style pads sometimes require double-sided tape or careful fitting depending on the headphone.

Material Effects on Sound and Comfort

This is where earpad choice gets genuinely interesting. Velour breathes well, runs cooler against skin, but seals less effectively than leather or pleather. Less seal means less bass energy and a slightly different midrange character. Leather and pleather seal more effectively, warm up against skin over time, and generally extend perceived bass relative to velour.

Hybrid pads, like Dekoni’s Elite Hybrid line, split the difference with a velour face and leather outer ring. Owner reports consistently describe these as a comfort improvement over full leather with a smaller bass change than full velour. ZMF’s material lineup (suede, lambskin, cowhide) spans softness and seal characteristics, with suede being the most breathable and cowhide the most durable.

When to Measure vs. When to Trust Model Compatibility

If you’re buying pads specifically labeled for your headphone from Dekoni or ZMF, dimensional measurement is mostly a confirmation step rather than a critical filter. Model-specific pads are designed to fit and mount correctly. Where measurement becomes essential is when you’re considering universal pads, cross-fitting pads designed for a different headphone in the same family, or using ZMF pads designed for one model on a different platform via adapter rings.

Three years in, I’ve found the easiest workflow is to measure first, find the listed dimensions in the manufacturer’s spec page or a Head-Fi thread, and only proceed when the numbers are confirmed. Returning earpads isn’t always straightforward, and a five-minute measurement step before ordering is worth it.

Budget vs. Premium: Is the Upgrade Worth It

Budget pads like the Brainwavz HM5-style line are a legitimate starting point if you’re replacing worn stock pads on a non-flagship headphone. The comfort improvement over severely worn stock pads is real regardless of price tier. The question of whether to step up to mid-tier options from Dekoni or ZMF depends on how long you plan to own the headphone and how much of your daily listening time involves it.

For headphones I use daily, the ZMF Universe pads on my HD600 and Sundara represent a worthwhile mid-tier investment. The materials hold up better than stock and the per-hour comfort is meaningfully better for long sessions. For a headphone used occasionally or likely to be sold, a budget replacement gets the job done.

Frequently Asked Questions

How do I measure earpad inner opening size accurately?

Remove the earpad from the headphone and lay it flat. Use calipers to measure the inner opening at its widest vertical and horizontal points. For oval pads, record both numbers separately. Compare these against the spec sheet for replacement pads you’re considering.

Will aftermarket earpads change the sound of my headphones?

Yes, in most cases. Pad depth, material, and seal quality all affect frequency response, particularly in the bass and upper midrange. Deeper pads increase driver-to-ear distance and can soften treble. Velour seals less than leather, which typically reduces bass.

Do I need to measure if I buy pads listed as compatible with my headphone?

Model-specific pads from reputable brands like Dekoni or ZMF should fit without additional verification, but confirming inner opening size against your ear dimensions is still worthwhile for comfort. Compatibility labeling addresses mounting fit, not necessarily whether the inner opening will feel circumaural for your specific ear size. Checking inner dimensions takes two minutes and eliminates fit surprises.

Are ZMF pads worth the premium pricing over Dekoni or stock replacements?

Based on owner reports and my own experience with the Universe pads, ZMF pads justify the premium primarily on material quality and longevity. The suede and lambskin options feel noticeably higher-end than Dekoni’s materials. The sound difference between ZMF and Dekoni pads is subtle and headphone-dependent. For buyers prioritizing comfort and long-term durability over cost, ZMF is a reasonable step up.

Can I use earpads designed for one headphone on a different model?

Sometimes, with caveats. Outer diameter, inner opening, and mounting method all need to match or be adapted. ZMF sells adapter rings that allow their pads designed for one headphone to fit other platforms. Universal pads like the Brainwavz HM5-style options are built explicitly for cross-compatibility.