Review: Sony MDR-1000X MK1 4.75/5

― 21st of October 2026 ―

I live and work on boats. While this may conjure images of golden beaches and turquoise lagoons, in my case think more: itchy fibreglass, welding fumes and mouldy cupboards. OK, sometimes it's glamorous, maybe 20% of the time...

This lifestyle is quite unforgiving. Both to my body and to the things I own so if a piece of tech can stand it, it's a definite keeper. Because of this I tend to buy most things second hand as they have already proved themselves once. They're also cheaper, and not in landfill.

My Sony MDR-1000X (MK1) are no exception and boy have they proved themselves over and over again. Note that "MK1" is very important. I gifted someone (much more gentle than me) a pair of MK3 recently, which died after a few months from a weak capacitor solder joint. Issue that is apparently typical of that model.

But back to the MK1, let's get started with the review:

Sound quality 5/5

I bought these headphones expecting them to do 2 jobs: tell the outside world to shut the hell up and make the inside world sound as good as possible. And they do this extremely well.

Across all genres, the listening experience is a pleasure. On the low end, below 60hz clouds of deep cream surround you without ever getting muddy. Above that, kicks are tight and punchy. Climbing up frequency ladder you will encounter sharp but gentle mids and the trebble is ornate and detailed.

The MX1000X are, to me, tuned to perfection to be flattering while remaining extremely precise, even at low volume. Only in extremely noisy environments (see below), will you need to turn the volume up to keep feeling immersed.

Noise cancelling 5/5

In the course of my work I have recently had the privilege of spending about 80h pushing an angle grinder against a steel hull. These tools are noisy as they get, up there with blunt routers and Fein saws, and only second to jackhammers. The Sonys kept me sane during those dull hours, whether listening to music or as simple ear defenders using only their noise cancelling ability. In the latter case they performed just as well, if not better than their actual PPE counterpart.

I do have to say that over such a loud sound, I had to push the level of the music up a little bit to hear detail again. But in normal use (crowded public transport, airplane, annoying person talking too loud right behind you in a queue...) they are able to deliver a very full sound at a surprisingly low volume and completely mute any source of noise around you.

In case noise cancelling isn't perfect, there is a button on the left can that will trigger the "optimiser", which is really effective.

During phone calls, people have always heard me loud and clear. Careful, with noise cancelling on, one tends to shout...

UI / Software 3/5

I'm going to be tough in this section because it's the only one where I have bad things to say.

The right can is touch sensitive and provides volume (up / down swipe) and playback (left / right / double tap to pause or pick / hang a call) controls. Laying your whole palm against it pauses noise cancelling and actually plays the outside sound into the headphones.

I am delighted to say that these controls work with gloves! The flip side is that accidental triggers are a thing, especially while cortorting under a boat. It is also a bit too easy to turn off noise cancelling by accidentally pressing one of the buttons on the left can. Maybe a long press trigger would have been better for that action.

I also wish the volume touch control acted a bit more as a continuous fader rather than having to swipe x times to go down or up by x increments. But then if that was the case I may have fried my ears multiple times during an accidental trigger.

In the same vein it seems too easy to confuse a vertical swipe for a horizontal one. Frustratingly skipping a track when you meant to turn it up. This is also mostly a thing that happens during acrobatics, usually if the headphones aren't sitting perfectly upright on your skull. A bit more of a dead zone between the vertical and horizontal swipes would have probably helped.

None of these issues have ever arisen during normal use, just extreme DIY uncomfortable positions... But open-sourcing the firmware could allow for each to tune these controls to their own taste or use case so we're losing a star here as well.

Build quality 6/5

Yes, 6 out of 5. These cans have been getting thrown around among power tools for the last 5 or 6 years and still work perfectly. The photo should speak for itself.

I have used them in situations so dusty that I had to wear a full plastic suit, P3 respirator and dust proof goggles and they came back to tell the tale. I recently got worried about metal shavings ruining them during and extensive welding and grinding session, but the 1000X patted me on the back and told me to mind my own business. I give the vents the odd vacuum session every now and then just to be sure but particulate ingress doesn't seem to be an issue.

The battery still lasts forever, essentially so long that I don't know how long. I just charge them every now and then when a charger and cable happen to be nearby and they've never let me down for it. They are essentailly old GSM phone batteries so replacements are cheap and plentyful should I ever need one.

They are generally fairly repairable. Obviously you will want to be gentle as we're talking plastic clips and tiny enameled wires but no nasty glues or exotic screw heads will get in the way. Aftermarket parts are fairly easy to find online.

Conclusion

The only bones to pick have to do with software. As I said, open sourcing the firmware could have allowed end users to solve them so I think it's fair to make this piece of gear miss a perfect score for it.

Apart from this, the MDR-1000X MK1 have been blessed by the headphone gods on most accounts.