Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
Thor Mjölnir
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Thor Mjölnir

$199.00 USD

Next-Generation Beryllium Driver Earphone

    Created the next-generation of large-sized beryllium diaphragm
    Unusually strong Tesla Magnetic Driver
    Formed from the German EGGER medical-grade resin
    Much faster flux and quicker surface vibrations

About Thor

Thor was founded by a freelance engineer who has built up a sizable reputation in the DIY in-ear monitor community in China. Through close collaboration with local driver manufacturers, Thor has created the next-generation of large-sized beryllium diaphragm that is denser than those currently used on the market. With a vision for paramount sound quality and bespoke character, Thor is committed to hand crafting each earpiece in small batches and continually innovating the field of in-ear monitors

Mjölnir (Me-yo-neer)

With collaborations with local driver manufacturers, Thor has created a next-generation beryllium diaphragm that is more dense than other Be-drivers currently used on the market. The denser material and larger 10.4mm size allows a much faster flux and quicker surface vibrations, resulting in a much more detailed music playback and enhanced overall resolution. The new diaphragm material required pairing with an unusually strong Tesla Magnetic Driver to achieve the diaphragm’s maximum potential. The driver features incredibly powerful lows that emphasizes the subbass punch of kickdrums and bass guitars. The mid frequencies are characterized by rich warmth and clean texture, while the high frequencies are smooth, without being over or under bearing. The overall tuning of the Mjölnir is smooth and balanced, with sparkly details that sit perfectly in the mix. We believe lovers of impactful yet crisp bass will be thrilled by the new potential the Mjölnir and its beryllium driver is capable of.

One of a Kind Abalone Design.

Each Mjölnir unit is handbuilt by Thor’s founder and chief engineer. The housing is formed from the German EGGER medical-grade resin, which is both safe to the skin as well as extremely durable. The faceplate of each earpiece is crafted from hand-cut genuine abalone, which makes every unit unique and one of a kind. By focusing on small-batch handcrafted quality, Thor aims to create a sustainable and reliable company image that reflects the incredible sound of its in-ear monitors.

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Authenthic Products

Linsoul Audio is the authorized distributor. All products are authentic and genuine.

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Worldwide Free Shipping

We are located in china but send our products worldwide for free.


1 Year Warranty

We provide 1 year warranty for the all products except the cables*.


Online Support

We reply to all support inquiries within 3 working days.

10.4mm dynamic driver
Frequency response
110 dB​
0.78 2pin

Coming soon...


Coming soon...


Customer Reviews

Based on 13 reviews
A good buy

I was positively surprised of the bang-for-the-buck of these. The bass has proper punch in it without making everything else sound muddy. Nothing pops up unnaturally , pretty much nothing gets lost. Mjölnir's a well-thought and balanced IEM, I don't hesitate to recommend these.

Thor Mjolnir

These are fantastic basshead headphones that have very deep bass with good control that doesn't creep into the middle.
The middle is warm, without any distortions and ticks.
The upper ones are slightly pushed in, but without fanaticism you will hear all the cymbals and bells.
The scene is normal, more micro-contrast. Nice fit, as if they were made right under my ears. Noise isolation is good.
These were the pros, and now about the cons. Very long delivery, I waited 4 months. There is literally no delivery set.
Only headphones with cable, case and foam. Is Linsoul serious?

Thor Mjolnir

My first bass driven dynamic driver iem. Has wonderful bass that doesn't bleed into the mids, and the treble. Very nice pair of iem for the money!

So far (tried several tips and cables), the only thing i get is a slightly elevated mid-bass.

I expected a bass heavy IEM, but compared to ie Blon 03, the bass is really nothing to write home about


unfortunately i cannot still have not received the merchandise yet.

The BEST contemporary basshead IEM

Thor has a very good, very-hard-hitting sub-bass you can feel your ears rumble. And as a good rule of thumbs of quality basshead IEM, it doesn't invade mids, and it doesn't boost upper bass or lower mids, something that usually presents on cheaper "bassy" IEM to create the illusion of great bass. It's mid is okay, not great, but very enjoyable. It's had clear but very polite highs (rolled off, if you prefer to said it that way) that you can enjoy it for hours on end. Also it responds to EQ nicely, you can boost Thor bass and it will obey you no question asked.

It's GREAT fun and enjoyable for long listening for basshead.

The only bad thing is the long wait time (because apparently, it is a personal project) and VERY QUESTIONABLE QUALITY CONTROL, some of my friends had some QC problems that should not be happened in very limited batch items. Fix the production time and QC problem and I'm sure this one will be a hit.

Bass head iem

The bass quality is very good, nearly as good as Sony MDR ex800. Mids are so so. Highs r weak. Soundstage is not great. Packaging is very bare bones but is good. Cable is nice quality and it comes in a Linsoul case which are superb. I do recommend these items.
Bottom line if you can't get Ur hands on a set of MDR ex800 for Ur bass fix then this is a good shout.

Heavy Heavy Bass

Love the bass, but it is super bassy and not enough upper mids or treble. Sound stage is small but separation is great. Look and fit are both good. Cable is super soft. It can be a 4 star IEM if you don't mind the tuning.


Thor Mjölnir


Thor Mjölnir


Coming soon...


Coming soon...

Our Shipping Process

If everything goes right our system will automatically generate your order and send you a confirmation email. If you don't receive the confirmation email please double-check that it wasn't automatically stored in your spam or promotions folder.

3 Working Days*

Most of the items you see are in stock and ready to be shipped after 3 working days. If you plan to order a custom (Design or Fit) product, a pre-order, or a made to order item processing times may change on item to item basis.

Standard Shipping
15 to 30 Days.

Standard shipping is offered free worldwide for orders under $199 USD (with some exceptions), but please consider that delivery times may vary considerably depending on your country, up to 90 Days.

Express Shipping
3-6 Working Days.

All items over $200 include free express shipping (DHL or similar). If your order total is under $200 you can manually add Express Shipping during the checkout period for $15.00 USD

Shipping FAQ's

Which countries do you ship to?

We are generally able to ship to most countries via DHL Express, and many countries via Standard Shipping. You may clarify with our team to see whether Standard Shipping is available to your country.

*Note: We can only do Standard Shipping for the UK, India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.

How much does shipping cost?

We have two shipping options - Standard Shipping and Express Shipping via DHL Express.

  • Standard Shipping is free, while Express Shipping is 10-35USD depending on your country. If your order is over 200USD, Express Shipping is free.
  • Shipping fees exclude import taxes or processing fees that might be applicable for your country. Linsoul is not responsible for any form of such fees.

How long does it take to process my order after it is placed?

For in-stock products, your order will be shipped within 3 working days.

Customized items will take a longer time (do check in with our staff for more information).

On normal non-sale days, once your parcel has been shipped out:

For Standard Shipping, it takes about 2-3 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country and its customs. The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to DHL Express or keep the waiting time in mind.

For Express Shipping, it takes about 3-7 days for items to be delivered after shipping out.

*Note: Timings might be affected due to festive seasons or other unforeseen circumstances

Which countries do you ship to?

1. Kindly contact your local courier using the local tracking number. We will not process a refund or reshipment of the parcel since it has been shipped.

2. Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation:

  • Wrong address or phone number provided by recipientRecipient was uncontactable when courier company contacted
  • Recipient was uncontactable when courier company contacted
  • Refusal to sign for the package by recipient
  • Lost or damaged parcel because recipient opted for “no-signature delivery”
  • Refusal to pay for the local tax/processing fee by recipient
  • Refusal to provide supporting documents for custom clearance by recipient

Who will pay for my import tax/custom fees?

Customers have to bear any form of custom/import/processing fees that are applicable for your parcel.

Should you be unwilling to pay for the fees and reject the delivery of the parcel, you will still have to pay for the shipping cost. Linsoul will only refund the amount of your order after deducting the shipping cost incurred.

How do I get help for my order?

For faulty/missing items, please send an email to to process warranty. In your email, please choose an appropriate Subject Title. Kindly include your Order Number, and state your issue clearly. Please also attach photographs/videos as “proof”, if any.

Our team aims to review your email within 3 working days.

For other queries, the fastest way to contact us is via Discord:

How do I order Custom In-ear Monitors (CIEMs) on Linsoul?

Please kindly check the following guide first: CIEM Ordering Guide

Do I get tracking details for my order?

After placing an order, you will receive the order confirmation email. After your order has been shipped out, you will also receive a tracking email. You can track your order via the tracking number online. Should you not have received the emails or face any difficulties tracking your order, please kindly contact us for support.

What shipping companies do you use?

We collaborate with 4PX, UBI, SF Express and DHL Express.