Kiwi Ears KE4 II
Kiwi Ears KE4 II
The original Kiwi Ears KE4 established a strong reputation with its balanced tuning philosophy and versatile sound performance. Following this foundation, the KE4 II introduces a completely redesigned driver architecture and refined acoustic tuning. Featuring a new 1 planar + 2 balanced armature + 1 dynamic driver hybrid configuration, the KE4 II improves resolution, layering, and tonal balance while maintaining a natural and cohesive listening experience.
Redesigned 1 Planar + 2BA + 1DD Hybrid Architecture: The KE4 II features a redesigned 1 planar + 2BA + 1DD hybrid configuration, with each driver optimized for different frequency ranges to achieve improved resolution and balanced sound reproduction.
Balanced Sound for Various Genres: With its refined modern tuning, the KE4 II delivers controlled bass, natural mids, and smooth treble, making it suitable for a wide range of musical styles.
Handcrafted Medical-Grade Resin Shell: Each KE4 II shell is handcrafted from medical-grade resin, finished and polished by hand, with individually decorated faceplates for a unique appearance.
Detachable 0.78mm 2Pin Cable: The KE4 II comes with a detachable 0.78mm 2Pin cable system, allowing users to replace cables and extend the long-term usability of the IEM.
A Legend, Reimagined
The original Kiwi Ears KE4 launched with global acclaim, setting the benchmark for a new era of modern IEM tuning. Following this legacy, the KE4 II has been completely redesigned with a more efficient driver architecture and a refined benchmark tuning.
New Driver Architecture
The KE4 II has been engineered from the ground up, utilizing a completely new three driver-type configuration that achieves greater resolution and midrange texture. The original KE4 was a 2DD+2BA Hybrid configuration, but by upgrading to a more powerful 1DD woofer, an additional driver could be added to enhance the fundamental frequencies - all while keeping the 4 driver framework. Compared to the original KE4, the new driver configuration optimizes driver load, particularly in the mids and trebles, enhancing technical performance and timbre.
Newly Developed Drivers
A single 10mm biocellulose dynamic driver subwoofer delivers precision sub-bass and bass impact rich with textural rumble. A custom-made dual balanced armature drivers focus on layered and articulate mids and lower-trebles. An innovative custom microplanar ultrasonic tweeter brings out airy micro-details. Compared to balanced armature tweeters, the microplanar ultrasonic tweeter is able to significantly output greater +20kHz treble extension at lower distortion. Importantly, the timbre of microplanar drivers are smoother and more natural sounding compared to balanced armature drivers, which are often described as “plasticky”, or electrostatic drivers, which can feel too metallic.
A Refined Take on Modern Sound Signature
The KE4 II was tuned following a new tonal ideology. Based on modern target preference curvatures, The KE4 II refines the sound signature to balance neutrality with musicality. The lows feature a dedicated 8dB sub-bass shelf that cuts off precisely at 200Hz, providing enough bass rumble for all genres, while keeping the midrange free from bloating or muddyness. The midrange is completely flat from 200Hz to 1kHz, allowing a studio monitor presentation of vocals and instruments. This allows the music to be heard as it was recorded, without any artificial colorations to the sound. The treble peaks exactly at 3kHz, following the perceived hearing compensation for the ear anatomy. The ultra-treble has been tamed to allow a more natural and fatigue-free listening while maintaining a spacious soundstage thanks to the fast transients of the microplanar driver.
Optimal Sound for Every Genre
The KE4 II sits at the tonal balance that is perfect for every musical genre. Whether it is pop, rock, hip-hop, or classical music, the secret to the KE4 II’s performance lies in its sound signature. Each musical genre is presented as it was intended, allowing the KE4 II to sound incredible, no matter what song is playing. Moreover, the KE4 II is perfect for all usage scenarios, including stage performance, sound engineering, musical enjoyment, and gaming.
Crafted by Hand
Each KE4 II unit is handcrafted. The shells are made from medical-grade resin, finished, and polished by hand, while the faceplates are individually decorated. Each driver unit is measured and paired to ensure channel balance and optimal performance prior to assembly. Every component of the KE4 II is hand-assembled, and each completed unit is measured again to ensure quality controls. The KE4 II is designed and manufactured to be a dependable tool for all scenarios.
Custom Detachable Cable
The Kiwi Ears KE4 II comes standard with a detachable 2pin 0.78mm cable system. The detachable cable system allows users to mix and match their cables to customize their listening experience, while simultaneously extending the longevity of the IEM.
Technical Details
Driver Configuration
1 planar driver + 2 balanced armature drivers + 1 dynamic driver
Crossover / Acoustic Design
3-way crossover with 3 acoustic tubes
Frequency Allocation
1 ultra-high-frequency driver, 2 mid-high-frequency drivers and 1 low-frequency driver
Impedance
13Ω @ 1kHz ±1Ω
Sensitivity
104dB @ 1kHz ±1dB
Frequency Response
20Hz–20kHz
- Kiwi Ears KE4 II IEMs × 1 Pair
- Detachable Cable × 1
- Silicone Ear Tips (S,M,L) × 3 Pairs
- 3.5mm Plug × 1
- 4.4mm Plug × 1
- Nozzle Filters × 4
- User Manual & Warranty Card × 1
PRICE
Shipping Policy
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.
Customer Support
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.
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
