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$69.99 USD

6BA Balanced Armatures in-Ear HiFi Metal Earphones

  • New 6BA Balanced Armatures Earphones
  • Bright Neutral Sound Earphones
  • Exquisite Craft
  • Ergonomic Design&Noise Canceling.

New 6BA Balanced Armatures Earphones

KZ is a motivated creator in headphone field as we all know. Now they have their new 6BA earphones which adopts new driver configurations. It features 2 30012 high frequency BA drives, 2 29689 Mid frequency BA drivers and 2 22955 Low frequency BA drivers. With this, it’s more suitable for pop music or light music as well as for vocals.

Bright Neutral Sound Earphones

With the drivers, AS12 reaches more accurate restoration and more sound details. It also improves the sensitivity to 1kHz which is about 10dB higher than the traditional dynamic drivers. The peak frequency is from 1k to 10k, 50% higher than the normal ones. Overall this model performs better in instrumental vocals, sound field range and analytical capability.

Exquisite Craft

The faceplate is made of zinc alloy while the cavity is made from imported resin. The two different material not only presents an elegant look and shimmer but also be practical and durable. The detachable OFC 2 pin cable offers fully upgradability and the limit slot protection design greatly avoids the pin from breaking and prolongs the service life of the interface.

Ergonomic Design&Noise Canceling

The cavity is made based on large data of cochlea. It’s scientifically molded to fit the ear like an customized earbuds. Even with vigorous exercise, it will still securely fit in the ear. Comfortable for long time wearing as well. Because of the special design of pedal-shaped sleeves, it can effectively isolate the noise to 26dB to offer a better experience while enjoying the music.

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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.

Product Name
KZ AS12 In-Ear Earphone
Total 12 balanced armatures, 6BA Per Side
Earphone Sensitivity
Frequency Range
Connector Type
0.75mm 2Pin
Plug Type
3.5mm Straight Plug
Cable Length
Cyan or Black
Whether with mic
OFC Oxygen-free copper cable

Coming soon...


Coming soon...


Customer Reviews

Based on 3 reviews
Further to the last review...


I received contact from LONSOUL after explaining that I was not happy with the quality of the item a day later.

They asked me to post it half way across the globe at my own expense and that they would also charge a 35% restocking fee!

I shall pursue them for the payment as this is clearly not an acceptable response to selling an inferior product - but just be warned they shall likely pull this trick with anyone who is not happy with their item. The is was an online purchase made in the UK, so they are bound by UK distance selling law when trading in this country.

Pro's & Cons

Great packaging, well presented when opened and the high build quality of the units themselves are immediately evident and impressive. The connections are also of a high quality and very secure.
The sound is clear, detailed and has some width.

Unfortunately the rest is negative.. In contrast to the other review, these units do have well separated bass, but it is weak and too far from the rest of the frequency range. The mids also lack presence as a result of the poor balance between mid and bass frequencies (think of recording your voice on a quality microphone, then playing it back on a laptop speaker!). The worse thing of all is the treble though.. it is detailed and accurate, but so bright that it isn't comfortable to listen to for any period of time.

I 'back to back' listened to these with other brands and types of headphones to make sure I was being fair in my assessment. The closest set I have are Shure se535's that I ordered, and unfortunately turned out to be fakes (far too many fakes on the market!) - yet these fake IEM's ironically outperform these AS12 units for sound, and incredibly by a notable margin!

I can state the AS12 build quility is confidence inspiring with no reserve - but this is in no way reflected in the sound. These AS12's shall be returned. There is no circumstance I can imagine where I would reach for these IEM's over anything else available to me.

I shall do some more research, and depending on the efficiency of the returns service, shall try this brand again and see if I can get the sound to match the build quility - if I can I shall be very happy!

Brighter sound, emphasis on mid and high.

I also bought the ZS10 Pro to compare, but much prefer the AS12. The AS12 has a cleaner bass that doesn't bleed into other ranges. It's also clearer in mids to highs. I'm driving this with magni/modi at low gain and no EQ.

For classical AS12 comes out great. It has a solid rich sound that only struggles with strings in the upper register.


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.