KZ Ling Long

1 DD Open-back HiFi In-Ear Earphones

  • Small size hides incredible energy
  • Delicate and compact industrial style
  • Professional open-back cavity acoustic design for wider sound field
  • OFC silver-plated cable
  • Mic :
    Product Price
    $17.00 USD $14.00 USD
    $15.00 USD
    Terms & conditions
    This Product is a Pre-order

    Processing Time before shipping: 14-21 working days, depending on demand and supply. Next batch of units are expected to arrive on 17 March 2023. All orders to be shipped out sequentially. avg.

    This is a rough estimation. It may change without prior notice.

    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.
    Free Shipping

    Authenthic Products

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

    Free Shipping

    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*.

    Small size hides incredible energy 

    Equipped with XUN-6 external magnetic dynamic unit which bring crisp and dynamic sound qualityCompared with the conventional-size dynamic unit, the micro-dynamic unit has an inherent structural advantage in high-frequency performance. It is easier for the micro-dynamic unit to show the UHF details vividly.

    Delicate and compact industrial style

    Like its name, KZ Ling Long adopts a minimalist aesthetic design, and the earphone chamber is made of pure aluminum alloy. Its net weight is only 18g, and it can be worn in various ways. The small and light shape also effectively reduces the pain of wearing in-ear earphones, and smaller sizes can be more deeply inserted into the ear canal. The high-frequency attenuation is negligible when the nozzle is closer to the eardrum.

    Professional open-back cavity acoustic design for wider sound field

    The precise cavity structure can control the airflow to enhance the dynamic performance of low frequency. At the same time, it can also make the voice sweet and warm, retain more details of the instrument, and form a clean and balanced sound.
    The traditional structure:
    The traditional pressure relief structure adjusts the chamber's internal pressure through the pressure relief hole to avoid damaging the diaphragm when the chamber's internal pressure is too high, and it helps weaken some low-frequency output. Still, this practice will distort the overall sound quality.
    Open-back design:
    On KZ Ling Long, we optimized the new magnetic circuit structure on the XUN-6 unit. Also, we adopted an open-back chamber design, which significantly increased the air flux and flow rate, making the hearing more transparent and natural. 

    OFC silver-plated cable

    KZ Ling Long is equipped with high-purity oxygen-free copper flat cable, which has high signal transmission efficiency to ensure good sound quality.

    Product Name
    KZ Ling Long In-Ear Earphone
    Earphone Sensitivity
    Frequency Range
    Connector Type
    0.75mm 2Pin
    Plug Type
    3.5mm Straight Plug
    0.75mm 2pin
    Whether with mic
    OFC Oxygen-free copper cable

    Coming soon...


    Coming soon...

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    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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