Massdrop x HiFiMAN HE-350 Audiophile Headphonessearch

Massdrop x HiFiMAN HE-350 Audiophile Headphones

Massdrop x HiFiMAN HE-350 Audiophile Headphones

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Hi everyone, It has come to our attention that some drop participants have received defective units of the Massdrop x HiFiMAN HE-350 Audiophile Headphones. We’re so sorry for the inconvenience and we want to make sure we address every member who has experienced issues with their headphones. If you have received a defective pair of the HiFiMan HE-350s, please reach out to our Community Support team for assistance via the Transactions page: Again, we apologize for the inconvenience. We’re working to resolve all issues with this product as soon as possible. If you have any additional questions, please feel free to reach out to us.
after a month... i baby my headphones... i even have sheepskin earpads on them.. i didnt even here it snap or crack.. it just gave out..

expect hidden fees if you order to Canada wouldn't recommended it pick up a comparable pair from Amazon this website and this deal specifically is NOT WORTH IT
how would these do for a pair of beginner cans? I'll be pluging it straight into the on-board output on my PC and my Galaxy S9 so yeah... I know that the build quality is really bad but would anyone recomend these?
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They run fine of my 6s and my Z370 Prime motherboard. So you shouldn't need a dac/amp.
ah ok. Thanks!
another broken headband here. Plastic is brittle. sounds good but build quality is very poor.
anyone know if there is a warranty ?
Yep there's 1 year warranty. Alot of other headphones on here seem to have 2 year warranty. Call it a conspiracy but that's pretty suss in my books. I recommend getting your money back if at all possible and looking at the Beyer DT990 or 58x Jubilee drops on here instead. Not much more for a lot more quality.
Update to my last post. I opened up the casing and guess what I found? The tiny clip which acts as a click-lock cum terminal to hold the connector in place was lying free in the cup. Obviously, the connector pushed it in because it wasn’t fixed in securely enough.
See these images.

I have no idea what was holding it in place. I can see nothing there substantial enough to secure the clip against the force of the connector being pushed past it. I stuck it back with SuperGlue which is like trying to fix a amputation with band aid, but I had no choice. I’m sure it will fail the minute I push a connector into the socket.
The only choice is to remove the socket and replace it with a new one, and solder the wires back on. I don’t know if I can find a generic one that will fit. I am fed up to my back teeth with manufacturers being too clever for anyone’s good and using highly proprietary connectors, switches etc that only their devices carry and make the entire device useless if that item fails. If they want to make an impression, let them make a dependable product.
And Massdrop, time to pay heed to the worn out but still very relevant adage: “penny wise, pound foolish”.
Sparingly used HE350. Right sided 2.5mm socket suddenly doesn’t grip the connector. When inserted into the right can, it simply slips out. Very disappointed. Not sure if any warranty covers this. Massdrop needsto reflect. When you take a great product, whittle it down to barebones features and sell it for a very low price, you don’t call that a bargain or a mass purchase advantage. This is an audiophile space. Where is the quality?
My HE 350s just broke in two from being placed upon my head. My cans lasted a few weeks. If you look carefully at the picture below, you can see where they snapped. Cheap plastic. Very disappointing. They sound great, but they are useless if they aren’t built well enough to taken off and on again
Anyone in Australia have a broken headband? Would love to purchase it off you. The spare parts will help repair my older Hifimans.
To Massdrop or Hifiman, consider building better quality yokes and either sending them out to the people who bought these headphones or charging us like 5-10 bucks for it. Because currently as you can see on all of these posts below, and my headphones, the yokes on the HE350 break way too easily.

Well I got mine in yesterday evening, and the yoke was broken at the pivit where it transitions to the headband. To say I was not happy would be an understatement. For $100, I expect better build quality. Sent in a complaint to Massdrop, and got an email saying it was being sent to a "specialized team to better assist" me. Anyone know a good way to fix it while I wait for Massdrop to kick it into gear for once? Or, is there somewhere I can get "The Newly Enhanced Comfort Headband Headband for HE400i/HE560" for less then the $75 HiFiMAN is selling it for on their website?
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There's a metal core running through the yokes of the upgraded comfort strap. It's quite a bit better. Sent mine with a friend to Chicago and I've heard zero reports of them breaking. Also took them on Vacation with me for a week. They held up to the beach pretty darn well too.
Go for the different headband. That's exactly what I did, and they've held up beautifully.... Unfortunately that includes a few drops.....
I use Bayerdynamic DT770 Pros, are these worth getting?
Great headphones, until tonight. Never been dropped, handled with care at all times. I'm sitting watching youtube and all of a sudden, the right earpiece falls on my shoulder?! No snap noise, just plop as it drops on my arm. I look at it and it IS BROKE IN THE SAME PLACE ALL THE PHOTOS ARE SHOWING!
I could maybe understand if I banged these around or dropped them. I BABIED these things and they still fell apart. One hundred dollar headphones...but my old Logitech ones that have seen battles are still functional and they cost like 40 something. At this point I cannot recommend buying these. Now I get to go without while I see if I can get these replaced/repaired.
Update: hifiman replaced the yoke, so now we see if it works for a longer period.

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Email Hifiman directly.
I did, and updated the post. The replacement seems to be working well so far.
Just picked up a the he4xx man these are hard to driver harder than the den 6xx.
Any siggestions? Cause on my friends audio gd they sound amazing then on my dragonflyred they’re just eh.
If they make this bluetooth I'll DEFINITELY buy.
Looking forward to mine, and glad to know in advance to handle with care!
I'll be posting a detailed review after I receive mine. Also ordered a Schiit Fulla 2 DAC/amp to pair with them (and my other cans). Should be some good Schiit! :P
I concur
Canada Update: Package arrived (10 Days Total) – Hidden Charges & Shipping Explained! Canadian value listed as $130.87 (@1.3008 exchange rate) No Duty or Excise Taxes GST & PST = $6.54 + $9.16 = $15.70 Handing Fee = $9.98 – Canada Post shipping I assume????
Massdrop at Checkout charged: $ 99.99 for the cans. MassDrop at Checkout charged: $ 15.00 Shipping & Handling
U.S. Delivery Leg – MassDrop/DHL (NJ to NY - 6 Days – 32 km / 20 miles + or -) July 23rd - 5:45 pm: Leaves Secaucus, NJ / July 26th 12:30 am – Arrives New York, NY / July 29th -7:33 pm: DHL delivers to Canada Customs Ville St-Laurent, QC. Canadian Delivery Leg - Canada Post (QC to BC - 4 Days - 4,812 km / 2990 miles) July 31st - 8:58 am: Clears Canada Customs Ville St-Laurent, QC / July 31st 10:37 am – Processed Canada Post - 10:16 pm Departs Montreal, QC / Aug 1st – 8:35 am: Arrives for Processing Richmond, BC / July 2nd – 3:30 pm: Delivered Burnaby BC Now I can only hope the build quality of these headphones is way better then the comments indicate. I'll let you all know. Cheers
To those in Canada the price paid at checkout is not the final price. Expect hidden charges ($27) at the door in Vancouver upon delivery. That's almost another 30% OF THE PURCHASE PRICE for an order I still have not received. You get Snail Mail to Canada. Delivery is listed as "Express" yet it took 4 days to go 11 miles from NJ to NY. Then they hand it off to a 3rd party carrier with no notification or tracking link! What are you thinking? Misleading pricing and delivery. You need to do A LOT BETTER if your expecting any more of my business! Not a happy camper...…
Canadians dont buy from MassDrop Hidden Charges at the door
Just a non-related PSA to my fellow Canadians here:
My friendly neighbourhood postman informed me yesterday that they are cracking down on cross-border purchases and everything is being taxed gst and PST/HST plus handling fees. No more crossing your fingers, hoping to get away with it as we often have. You should now expect to pay.
complete trash build quality. paid $100 for the yolks to break in less than a week. don't consider buying until they get the steel reinforced yolks
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That's is where mine broke clearly a manufacturing defect....... do not buy
I want a refund! This is outrageous
Driving these from a laptop would I need to spend extra on a decent amplifier?
I thought these headphone is gonna be easy to run. it's quiet AF, why?
It truly is sad that marketing has pushed for "low impedance = easy to drive." The number you should initially look at is efficiency and/or sensitivity. Efficiency helps inform you how much energy it takes to produce a certain sound pressure level (SPL) aka loudness given in dB/mW units. Sensitivity informs you how much voltage you need for a certain loudness given in dB/V. Both terms help define how easy or hard a pair of headphones is to drive. Another important thing to look at is the amount of current needed for a given loudness. A website like can help with figuring that out.
Manufactures often only list one or the other (dB/mW or dB/V). Massdrop lists sensitivity but often enough it's actually listing efficiency (have to check manufactures websites). And... even manufactures misuse these terms. You have to look at the units (dB/mW or dB/V) to truely know which is being used. Hence, the confusion everyone seems to have. It's not exactly straight forward to determine if a headphone is easy to drive.
In this case, the HE350 has an efficiency rating of 93 dB/mW (btw higher the number the easier it is to drive). If you compare this to enough headphones you'll learn it isn't the worst, but it's still pretty bad for a consumer headphone around this price . If you enter in this information into a website like you'll see that to get 110dB SPL, you need ~1Vrms and 50mA which is basically at the limit or too much for many devices to provide.
side note : 1Vrms = about 3V peak to peak - nearing smart phone battery limit. And the op amps (simple amplifiers) probably used in your portable device have current limits between 35mA and 70mA from what I've seen (not confident what a good range should be).
(for these headphones) If you want it another 5dB SPL louder, voltage and current requirements nearly double. If you want another 5dB, nearly doubles again. It wouldn't surprise me if many devices can only get these headphones to 105 dB SPL, which is probably why you find them to be kind of quiet.
Usually depends on what device you are running it with. I tested it between my Samsung galaxy s6 and my LG k7, and the Samsung was much louder. The LG k7 has static in the background while the s6 has no feed back.
Would these be as good or better than the HE4XX?
No. These are dynamic driver headphones selling for cheaper. I own both and I prefer the 4XX tbh, but these are easier to drive from a phone.
However, there seem to be less breakage issues associated with the 4XX's headstrap design.
I mean, better with regards to headphones is always really subjective. Having spent a considerable amount of time with the 350's, I can say I prefer the 4XX's for just about every reason. But that doesn't mean they're bad headphones. So, make of that what you will.
I can't believe they are still selling these with the plastic yokes.
My guess is by now they feel everyone is well informed and any buyers are aware of the problems. They make good sound and knowing what would be needed to make them work I'd still pick up a pair now that I know how to replace the yokes.
If you have problems with the yokes (ear-cup supports) breaking, like I did, and don't want an entire replacement headphone, contact HiFiMan directly: for prompt and helpful service that should, in all likelihood, fix the problem.
OR, for a more proactive option:
(You can always ask if HiFiMan will replace your yokes with the upgraded ones after they break as well. You never know)
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I did the same.
Anyone, read this.
I got my headphones today afternoon. Cool looks and comfy to wear but the sad part is sound is coming only from one can not from another. I figured that problem is with aux cable. One side is not working.
What could be the resolution from Massdrop?
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thank you so much.. I contact support team and they responded like more tickets in queue. Probably take some time to take action on my ticket
Just so you know, I'm not from Massdrop, though I would recommend potentially also checking in with Hifiman directly:
I really do like how they sound, but the build quality is the same as a $5 pair from CVS. The plastic holding the cups likes to bend when you turn your head, and they break in half after only a few weeks. Massdrop were awesome and sent me 2nd pair, and these are broken after only 1 week. The same thing happened with my friend's pair too.
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You're awesome :)
NP my dude. I feel like I got really lucky with contacting support, as they upgraded me. I didn't want to tell people they would definitely have the same happen to them, because who knows, but I had it happen, and it definitely seems to be stronger. Good luck!
Selling mine, because I bought the senns 6XX here in Massdrop and I no longer need the Hifimans. Barely used, very good condition.
I'm selling mine, like new, only used 2-3 times. Turns out I don't like Open Design headphones