Kiwi Ears Quartet
The Kiwi Ears Quartet was designed around our new sobaric double dynamic driver subwoofer. The innovative driver design utilizes two 10mm titanium diaphragms drivers, each independently driven by dual magnetic circuits. The pair of drivers were passively aligned to be phase synced and prevent soundwave cancellation. This new subwoofer design emits extremely well extended sub-bass kicks that are tighter, faster, and deeper than any other previous woofer designs. The Quartet is Kiwi Ear’s answer for all those who want a fun in-ear monitor that will provide all the quality bass one could need.
Although the Quartet is a bass-centric IEM, we still aimed to provide a natural tonal balance. This goal was centered around the need to provide a textured and powerful bass, but without any muddying or dulling in the mids or treble. The dynamic drivers were crossed over using a passive low-pass network at 350Hz to allow plenty of rich and thick bass, while the mids from 350-1kHz were tuned to be completely flat.
This allows an accurate tonality in the mids like that of neutral studio monitors, while giving a hint of warmth in the lower mids. This means the Quartet will sound thunderous in the bass, but still clean and flat in the mids, preventing unwanted bloating found in most earphones.
Custom Balanced Armature Drivers
The Quartet features a custom mid-high frequency balanced armature and a custom ultra-high tweeter balanced armature drivers. These drivers were modified to fit the balance of the new dynamic drivers by a tuned venting system to provide more airflow. Following Kiwi Ears’ tradition, the balanced armatures are passively tuned to fit our in-house target curvature for the mids and trebles. This means the mid-treble provides crisp and clean tone to vocals and instruments, without sounding either dull or nasally. The highs are detailed with plenty of sparkle for professional performance usage, but are natural and free of shrillness or fatigue.
The Quartet can be thought of as neutral studio monitors, but with sub-bass and bass emphasis beginning at 350Hz. This provides a little bit more of body, texture, and richness in the lower mids, but neutral mids and upper mids. The Quartet is perfect for performance drummers and bass guitarists who require powerful and impactful lows. Music enthusiasts who want quality bass but a natural tonality will also benefit from the Quartet’s tuning balance.
About Kiwi Ears
Driven by the pursuit of extraordinary audio reproduction, at Kiwi Ears, we create the perfect amalgam of technological innovations with refined tuning strategies. With musicians and studio engineers particularly in mind, we are on an uncompromising quest to produce the finest professional In-Ear Monitors that will reveal every nuance in your music and performance. Never settling for mediocre, our small team of dedicated engineers handcrafts each unit so that you can worry less about what’s in your ears and focus more on the sounds you are making. We are Kiwi Ears, and we’re bringing you music heard like never before.
This product is in Pre-order period. Pre-orders are provided for items that have not reached us and will take some time to be shipped out.
Pre-order Period: CIEM：15-20 working days
UIEM: 10-12 working days
5-7 working days if out of stock for the default design.
Note: Images are for reference only. Actual product and packaging may differ from the images. Final product is based on what is actually received.
Ear impressions for CIEM need to be approved first. Customers have to send that to us first via email.
- No cancellation of orders once ordered.
- All orders to be shipped out sequentially.
This set is great for many reasons but I was mostly impressed with how it did in first-person shooter video games. The technical capabilities of the Quartet really enhanced the experience of my gaming sessions. Also the shell is gorgeous, highly recommend.
These are beautiful , they are quite big but very comfortable fit. The default settings (2 switches up) sound great to me, very detailed with powerfulbass. Very good set at a very reasonable price
decir que estos Kiwi EARS QUARTET me han encantado, pero muchoooo… mucho!!
Puedes usarlo como monitores de estudio, con sub-bajo y énfasis en frecuencias por debajo de 350Hz.
Esto te proporcionará un poco más de cuerpo, textura y riqueza en los medios inferiores, pero con unos medios neutros.
Son perfectos también para baterías y bajistas que requieren bajos potentes e impactantes.
Pero, igualmente los amantes de escuchar una buena música que quieren unos bajos de calidad pero una tonalidad muy natural también se beneficiarán del equilibrio del diseño sonoro de este modelo QUARTET.
Así que si estás en alguno de estos grupos, te los recomienzo al 100%, yo estoy usándolos casi todo el tiempo que puedo llevar auriculares con cable. Y si ya tienes un amplificador o DAC AMP, les vas a sacar todo su jugo como a todos los auriculares con cable.
Decir una vez más que los auriculares con cable siguen siendo muy superiores a los auriculares bluetooth, aunque cada vez esa distancia se va a cortando, de momento unos auriculares IEM como estos sonarán mucho mejor que unos EarBuds bluetooth, por muy buenos que sean.
Y por decir alguna cosa a mejorar, que siempre la hay, quizá su escena sonora, no es muy amplia, les han dado algo de libertad de aire, para que la separación instrumental y la escena crezca, para que el sonido respire, pero quizá todavía esta es la parte que podría mejorar en este modelo QUARTET. Aún asi, estoy siendo muy detallista, porque para mi tienen un sonido increíble y divertido con sus graves potentes, peeero, ahí está ese detalle a pulir un poco todavía.
This is an incredible Earphone with great Bass, and what I love is how easy it is to drive it. It's a fantastic set around
Thank you Linsoul. Kiwi Ears Quartet gives me the experience of listening to music with a fat, muscular and fierce mid-bass sensation. The vocal presentation with the balanced armature driver is pleasant. Instrument sounds in both the midrange and treble are presented well.
I'll start by saying the shells are beautifully crafted, and very comfortable. Isolation is excellent once properly fitted. Sound wise these are smooth and rich sounding, The bass is deep and controlled. Midrange is warm lush and pleasant. Treble has a good extension and sounds very natural. Soundstage is accurate.
best iem ever ❤️
Sound grate for gaming and music, feel very premium (both the cable and the iem's themselves), switches make a difference and are very interesting to play around with, the case is very nice too, came basically in 10 days and I'm very happy with them
Kiwi Ears Quartet
We are sorry that our product did not satisfy you.
The Kiwi Ears Quartet was designed around our new sobaric double dynamic driver subwoofer. The innovative driver design utilizes two 10mm titanium diaphragms drivers, each independently driven by dual magnetic circuits. The pair of drivers were passively aligned to be phase synced and prevent soundwave cancellation. This new subwoofer design emits extremely well extended sub-bass kicks that are tighter, faster, and deeper than any other previous woofer designs.
The sound is very subjective. So we can totally understand that some people might not like the sound of these headphones.
We will also share your feedback with the manufacturer to make the product better and better in the future.
At the same time, we also sincerely suggest that you contact us at any time by email support@Linsoul.com if you encounter any problems during use, and we will do our best to solve them for you.
We appreciate your understanding and support.
This is my second product review for Kiwi Ears as I previously did a review on their first single dynamic driver in the entry-level category, The Cadenza. This is Kiwi Ears Quartet and it is a hybrid driver set-up IEM with toggle switches for different types of tuning. How will the Kiwi Ears Quartet be able to compete with other sets with similar features?
△ Beautiful and well-crafted acrylic resin shells.
△ Quite lightweight and probably has one of the best UIEM-style shell form factor when it comes to fitting and comfort as it snugs well into my lugholes.
△ Working toggle switches.
△ Good quality stock cable.
△ A plenty amount of ear tips to choose from
△Good quality IEM carrying case for stowage.
△ Easy to amplify as it scales well to all known sources.
△ A warmish U-shaped sound signature that will be likeable to majority type of casuallisteners.
△ Robust bass response.
△ Warm and textured midrange
△ Smooth and relaxed treble register.
△ Analogue-ish tonality the will gives a more pleasant and engaging listening experience.
▽ Occurrences of mid bass smearing across to other frequencies due to its boomy nature that it sounds a bit bloated.
▽ Will not give a lively, vibrant and energetic sound on sopranos and tenors
▽ Too warm sounding in my preference on sound quality.
▽ Overall mediocre technical performance.
For more information, check the link below:
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 thetwo-way freightcharges. 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 refundwill 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?
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.
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.
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
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 (Support@Linsoul.com) 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 support@Linsoul.com for after-sale services. The following details are required.
- Send an email to support@Linsoul.com with an appropriate Subject Title
- Provide your order number and state the issue clearly
- 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.
How do I cancel 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. Orders that have been shipped cannot be cancelled and modified.
As our Support Team may not be available during non-working days and weekends, please place your order wisely as support cannot be guaranteed for such requests.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (support@Linsoul.com) or website chat. We will help you with the changes if that could be done.
30-Day Return Policy
Where should I send the product for the return process?
To initiate the return shipment, kindly send an email to support@Linsoul.com within 30 days upon receiving the sealed product(s). The RMA form and details will be provided to you via email.
When must the product be returned after receiving the RMA form and details?
After receiving the return instructions from us via email, kindly arrange the return shipment of the parcel within 5 working days, and update us with the tracking link via email again. Failure to do so will result in a cancellation of the return process.
When will I receive my refund after returning the product?
In most cases, after receiving and inspecting the returned product, your refund will be processed within 5 business days. Refunds may incur a currency exchange loss or transaction fee, depending on your source of payment (e.g. Bank or PayPal). Linsoul will not be responsible for such fees.