5BA+1DD Hybrid Drivers HiFi In-ear Earphone

  • Newest 5BA+1DD Hybrid Earphones
  • Exquisite Craft
  • Physical Electronic Compound Tuning
  • Improved Ergonomic Design
  • The stock cables are available in black and white. They have the same characteristics and differ only in appearance.
    Note:They are delivered randomly.
Color :
Microphone :
Product Price
$49.99 USD $42.49 USD
$42.49 USD
Terms & conditions

Free standard shipping to most countries

Free express shipping on orders over $270*. Enjoy free tax and duty paid to most countries. Please refer to our shipping FAQ to see if you apply.

Covid-19 Shipping Delay Notice

Shipping may be delayed due to covid-19 depending on your country regulations.
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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. T&Cs apply.


1 Year Warranty

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

Newest 5BA+1DD Hybrid Earphones

After several successful series of hybrid driver earphones, here comes the terminator, KZ ZSX. It features high quality driver configurations which includes two DWEK BA drivers for medium and high frequency, one DD for low frequency and one 30095 driver for high frequency. With this setting, the sound is powerful and comprehensive, dynamic and bright in all respects. While maintaining the previous performance, the high frequency of this model is extended.

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 gold-plated 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.

Physical Electronic Compound Tuning

By having the reasonable cavity structure, finely balancing the vocal channels of each unit, the sound field reaches a deep performance. The details are rich. You can experience the full play of all the drivers, displaying a smooth, sensible, detailed music experience

Improved Ergonomic Design

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, it can effectively isolate the noise to offer a better experience while enjoying the music.

Model Number
KZ ZSX 5BA+1DD Hybrid IEMs
Frequency Response
Plug Type
3.5mm Plug

Coming soon...


Customer Reviews

Based on 11 reviews
Elizabeth Jennings
Sounds great but too large for my ears.

The sound of the KZ zSX is fantastic, And I could really tell the impact that the drivers have on the quality of the sound. However the entire apparatus was too large for my ears. I tried different ear foam attachments and it kept putting up against the side of my ear inside. I just couldn’t figure out how to make them work. I’m female and my mother said even when I was a little girl my ears were small. So unfortunately I had to switch back to my other brand which was not a KZ because they fit my ears.

C. Vreugdenhil


Loukas Zachilas
Value for money. Excellent midrange and bass

I was a little hesitant when looking at the IEM market. I have 3 wireless headphones, but the IEM experience is unique. This is exactly what KZ-ZSX offers you. Frequency accuracy and good sound quality.
The price is very satisfactory for the quality they offer you. I highly recommend them! I would give them a 4.5 without any other thought.

Great hardware at a great price

Great Sound. No dropping from ear. Beautiful and resistant. Great for phone calls Love it!

Jesus Gottfried

I will try and keep this short. For what I paid for it, they sound amazing. Yes, I upgraded the cable, that made a difference. Ordered tips, hope to get a little more bass. I adjusted the supplied small tips and that did the trick. Ok, no deep bass, but what you get is the full range of bass and depending on your source of music, it is ok, but quality of the bass is great. The mids are the most forward range, Superb, but guitars at the start of rock music will sound a bit louder than than when the rest of the music kicks in. Treble is pleasant for the most part. On a few tracks the treble was barely harsh sounding, so yes, the least quality sounding range of the three (due to the least frequency range of the three) but great for $40 bucks. Final Verdict: Once you get the accessories that will push the price (for me) to $70, it still is a bargain if you like the signature armature sound of the many earbuds that have them. 4.4 stars. Recommended.

Love the KZ ZSX

I have two nice over-the-ear headphones and now I just leave them in the drawer and only use the ZSX IEMs. Their precision and clarity is so much better than the headphones. Noise isolation is reasonable - I can still hear my wife when she call me (that's good) but much other noise is blocked out.
Customer service was good for me. I had a problem with one earpiece and Linsoul promptly sent a replacement.

Adrian Cardoso

Nice!! good sound, the cable is a little short, the plug is really ugly, R and L mark in cable is invisible. Eartips must be more technical, accord to the auric.

Parth Rathee
KZX can't handle.....

Loyal by Odesza

Broke way to fast and the company doesn't care!

I bought these to use only sitting at my desk with a dac and the right side cracked and the ear tip fell off completely making them not usable anymore. I contacted Linsoul and they only offered me a 50% refund and said literally to "just buy another pair" instead of just giving me a replacement pair. Absolute joke of a company. I will not buy your products again if you can't even support your customers.

Brian Shih
The best IEM from KZ so far (Full review on Linsoul's Amazon page for the KZ ZSX)

Throughout my two weeks of testing, I did an A/B testing with the ZS10 Pro and the MH750 (modded, 16 core copper cable). I used the included ear tips and the included cable.

SIZE/FIT (5/5)
In terms of size, I find these to be a bit bigger than the zs10 Pro. The ZSX has the best fit out of all of my earbuds.

Cable is a bit odd.

SOUND (5/5)
I've never been so blown away with a set of earbuds upon first impressions. I wouldn't say these are extremely bassy earbuds, compared to the MH755. I feel like the bass on the ZSX are more pronounced. Vocal and instrument separation was very notable with this earbud. They do a very good job of producing small details that I've only been able to experience on the Tin P1.
Compared to the ZS10 Pro, there is more clarity on the ZSX. The ZSX produce better results in the upper end. Both have a similar quality in the bass.
Compared to the MH750, the ZSX has better separation, but there's more bass in the MH750 in terms of quantity. Bass is more pronounced on the ZSX. Upper end is also more pronounced and clearer on the ZSX, but there were times when I experienced a little bit of sibilance, something I don't experience with the MH750.

Overall (4.6/5)
These earbuds are NICE for the price. Cable's a little wacky when it comes to how much these can get tangled up in a day, but the earbuds themselves are SOLID. If you are looking for a pair of earbuds to sit back and chill with, these would be my recommendations.

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 $269 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.

Most items over $270 include free express shipping (DHL or similar). If your order total is under $270 you can manually add Express Shipping at the checkout page for $15.00 - $35.00USD

World-Wide Shipping

Shipping FAQ

Which countries do you ship to?

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

We cannot ship to addresses that are "PO boxes or APO/FPO".

*Note: Generally, we can only do Selected Shipping to India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.
This may be subjected to changes due to unpredictable issues such as Covid, war, and etc.

How much does shipping cost?

We have two shipping methods - Standard Shipping and Express Shipping.

Standard Shipping is free for most countries, while Express Shipping is 15-35USD depending on your country. If your order is over 270USD, Express Shipping is free*. 

*This applies for most countries. However, large items such as headphones and desktop DAC/AMPs (e.g. HarmonicDyne G200, MUSICIAN MDP-2, and etc.) are excluded.

Shipping fees exclude import taxes or processing fees that may be applicable for your country. Linsoul is not responsible for such fees. Should you refuse to pay the tax/customs fees, shipping fees will still be deducted from the amount paid for the two-way freight charges. The cost of the freight charges may be more than the amount reflected on your order due to tax and other miscellaneous fees.

Some parcels claimed to be “returned to the seller” may be destroyed by the post office or customs officers when buyers refuse to accept their parcels or fail to pay for their taxes. No refund will be processed for such cases.

Standard Shipping via YunExpress is a tax-inclusive option for some countries. However, Linsoul will not be responsible for additional administrative or handling fees charged by your local courier company or customs. Please kindly check this with your local customs.

For certain remote areas, there may be additional charges via Express Shipping. We will contact you if there is a need to make additional payments. 
Please contact us before placing an order, should you have any queries regarding shipping.  

How long does it take to receive the order after it is placed?

For in-stock products, your order will be shipped within 3 working days. You may check with our staff regarding the in-stock status of any products. 

Customized items will take a longer time. Please contact our staff for more information.

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

  • For Standard Shipping, it takes about 2-4 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country, its customs and other factors.* The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to Express Shipping 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

What happens if the parcel has been shipped but not delivered?
  1. First, kindly contact your local courier using the local tracking number.
    If your parcel were to be in transit for at least 3 months, it may have been lost in transit.
    For orders below $50USD, you may either opt for a one-time reshipment of parcel OR a full refund of the amount paid in cash via PayPal/Credit/Debit card.
    For orders above $50USD, we will only process a 50% refund of your order paid in cash via PayPal/Credit/Debit card. Should there be any concern about Standard Shipping, you are encouraged to opt for DHL Express Shipping instead.
  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 recipient
    • 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 the 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 two-way shipping fees incurred.

How do I get help for my order?

Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order.
As our Support Team might not be available during non-working days and weekends, please place your order wisely.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email ( or website chat. We will help you with the changes if that could be done.

In general, upon receiving your parcel, please confirm the contents of the package and ensure that the package is in good condition before signing for it. All customers are strongly advised to take an unboxing video of their parcel and packaging when opening their parcels and products.

For faulty/missing items, please send an email to for after-sale services. The following details are required.
1) Send an email to with an appropriate Subject Title 
2) Provide your order number and state the issue clearly
3) Attach photos and videos to show that your product is faulty/missing. Shipping details on the parcel packaging have to be clearly visible.

If the photos/videos provided are insufficient to prove the stated issue, we will enquire more. Once the issue has been confirmed, we will arrange for a replacement, partial refund or a full refund (where applicable). For incorrect products, Linsoul reserves all rights in deciding whether you need to return the incorrect item or not. Please kindly contact us via email first. Our team aims to review your email within 3 working days.

For other queries, the fastest way to contact us is via our website or Discord

Linsoul Audio will not be responsible for parcels that have been damaged during the transit process.

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.

For more than 1 orders placed under the same account and shipping address, Linsoul will automatically combine the orders and ship them out via one tracking number. Should you have special requests to have the orders shipped separately, please kindly contact us via Discord or our website's chat. We will do our best to help.

What shipping companies do you use?

We collaborate with these courier companies:
Standard Shipping: 4PX, UBI, NinjaVan, and Yun Express
Express Shipping: DHL Express, FedEx and SF Express

Last updated: 1 November 2022

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