Kiwi Ears Septet
1DD + 4BA + 1 Planar + 1 PZT Quadbrid IEM
- Recommended for Professionals
- Recommended for Audiophiles
ForGaming/Studio monitoring/Critical listening
Shipping time estimate. Pre-order items are non-cancellable and non-refundable.
Pre-order detailsRecommended products
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Optional pairings. A cable and ear tips are already in the box.
Overview
The details behind Kiwi Ears Septet .
Advanced Hybrid Driver Design
The Kiwi Ears Septet combines seven drivers across four technologies—dynamic, balanced armature, micro planar, and piezoelectric—to deliver an exceptional audio experience with deep bass, clear mids, and smooth treble. The open-back design and custom tuning ensure a natural and expansive soundstage for both music enthusiasts and professionals.
Highlights
7 Drivers with 4 Advanced Driver Types
The Septet features an innovative hybrid setup with 7 drivers per side, combining dynamic, balanced armature, micro planar, and piezoelectric technologies. This diverse configuration ensures full-spectrum coverage with exceptional technicality, clarity, and musicality—ideal for both audiophiles and professionals.
Powerful and Clean Sub-Bass with 10mm Dynamic Driver
A large 10mm dynamic driver handles sub-bass and bass frequencies, delivering powerful, deep rumbles down to 8Hz. It’s tuned for tight, punchy impact without muddying the mids, creating a clean yet immersive low-end presentation that resembles a high-quality subwoofer.
Ultra-Detailed Treble with Micro Planar and PZT Drivers
The combination of a micro planar transducer and updated piezoelectric driver brings exceptional clarity, air, and resolution to the upper frequencies. Extending smoothly up to 30kHz, this setup enhances micro-details and spatial cues, offering a lifelike, three-dimensional listening experience without harshness.
Open-Back Design and 5-Way Crossover Network
Designed with an open-back shell and an intricate 5-way passive crossover system, the Septet allows natural airflow and precise driver control. This results in a spacious soundstage, organic tonal balance, and minimal distortion, making it equally suitable for critical listening and emotional musical enjoyment.
Kiwi Ears
7 Drivers, 4 Driver Types
The Kiwi Ears Septet is our latest advancement in hybrid driver configuration IEMs. Each Septet features four different driver technologies, totaling 7 drivers per side, for a comprehensive and technical audio performance.
10mm Dynamic Driver
The Septet utilizes the tried-and-true 10mm composite dynamic driver to power the sub-bass and bass. The large diaphragm dynamic driver outperforms other driver types for a powerful and deep sub-bass rumble down to 8Hz, and delivers a sub-woofer-like bass signature. Tuned precisely through both passive and acoustic strategies, the Septet offers hard-hitting bass that is rich, yet clean, for an uncompromising listening experience.
4 Balanced Armature Drivers
Four balanced armature drivers have been selected to power the low-mid and mid-treble frequencies on the Septet. Balanced armature drivers offer an articulate, accurate, and detailed sound due to their speed, providing a studio monitor-like precision to your music. Two independent crossover networks are utilized across the four drivers, dedicating each channel specifically across the low-mid and mid-treble range for a complete coverage across the entire frequency range while minimizing harmonic distortions.
A closer look at Kiwi Ears Septet .
The details, in full view.
1 Micro Planar Transducer
The Septet features a single micro planar transducer (MPT) driver as its ultra-treble tweeter. The newly updated MPT has significantly enhanced output at high-treble frequencies, which elevates the clarity while minimizing distortion and artifacts in the sound. The natural texture and timbre of the MPT allows a smooth treble extension up to 30kHz to bring out every micro-detail and air in the music, without harshness.
1 Piezoelectric Driver
An updated PZT driver is featured in the Septet, enhancing the texture and clarity in the upper registers. Synched in unison with the MPT drivers, the PZT delivers extreme articulation that refines the perceived air across the entire frequency spectrum, helping to better define the resolution and soundstage and imaging capabilities.
Open-Back Design
The Septet has been designed as an open-back IEM, allowing full ventilation to every driver within. This design enables greater airflow and responsiveness to the drivers, while enhancing the soundstage and giving an ‘acoustic’ like texture to the sound. It’s an essential part of the Septet’s natural and immersive tuning.
Extensive Engineering
It has taken almost two years for our team to design and develop the Septet. The Septet utilizes an all-encompassing 5-way passive crossover network, combined with acoustic tuning strategies and a three-bore nozzle system to provide a balanced and optimal tuning profile. The 5-way crossover spans over 4 driver types and 7 drivers to assign the optimal frequency ranges for each driver group, minimizing total harmonic distortion while boosting output.
Engaging and Balanced Tonal Balance
The Septet targets the ideal balance between musical engagement and tonal accuracy. Intended for both music enthusiasts as well as professional sound engineers, the Septet features an impactful sub-bass shelf that cleanly transitions into the low-mid and mids, which is natural and free from artificial coloring. The treble range is crisp, yet maintained at a comfortable level throughout the entire curvature, allowing for an extended, yet smooth, performance across the highs.
Custom Modular Cable System
The Septet comes standard with a modular cable system, allowing easy change between 3.5mm unbalanced and 4.4mm balanced plugs. The custom cable features ultra-high purity copper wires for a noise-free signal transduction.
Sound profile
A closer look at the balance between bass, mids and treble.
- Balanced
- Bright
- Tuning Meta
Technical details
- Drivers
- 1DD + 4BA + 1 Micro Planar + 1 PZT
- Driver configuration
- Quadbrid
- Driver technology
- Dynamic Driver, Balanced Armature, Micro Planar, Piezoelectric
- Cable connector
- 0.78 mm 2-pin
- Included plugs
- 3.5 mm, 4.4 mm (interchangeable)
- Style
- Open-back
- Fit size
- Medium
- Tuning profile
- Meta
- Sound color
- Balanced, Bright
- Suggested genres
- Pop, Classical & Orchestral, Vocal-focused music
- Driver
- 10mm Dynamic + 4BA + 1 Micro-Planar + 1 PZT (Open Back)
- Crossover
- 5-way with 3 tuning tubes
- Rated Power
- 5mW
- Max Power
- 10mW
- Impedance
- 15Ω
- Sensitivity
- 95dB @ 1kHz/mW
- Frequency Response
- 8Hz – 30kHz
- THD
- <1% @ 1kHz
- Cable
- 5N OCC, 0.78mm 2-pin, 1.2m ±5cm
- Plug
- 3.5mm & 4.4mm Interchangeable
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Expert reviews
Watch the review. Read the full story.
Watch
the Honest AudiophileDavid Sylvia
Kiwi Ears Septet - 7 Driver Open Back Uniqueness - Honest Audiophile Live Impressions
Linsoul AudioJames Demer
[Review] Kiwi Ears Septet: 7-Driver IEM With an Expansive and Energetic Soundstage
Linsoul Audio / Audio AmigoOmar (Audio Amigo)
[Buyers Guide] I reviewed 21 Kiwi Ears IEMs. Which ones made the cut?
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Video review: Kiwi Ears Septet
Read
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Audiophile Style
Fresh Kiwis: Kiwi Ears Septet, Astral, and Orchestra II IEM Review
Josh Mound appreciates the distinctive metal construction and underlying technical ability. He finds the presence peak, scooped midrange and disconnected staging less convincing than the KE4.
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SoundGuys
SponsoredDo more drivers equal better sound? - Kiwi Ears Septet review
The reviewer enjoyed the full, detailed sound and spacious presentation. Large shells and ear hooks became uncomfortable during longer sessions.
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AndroidBrick / maDog
Review sampleKiwi Ears Septet Review
The reviewer highlights open staging, clear vocals and controlled, detailed treble. The review notes substantial source-power demands and a trade-off in naturalness.
Customer reviews
What listeners say about sound, fit and everyday use.
Customers praised the quad-driver IEM's "excellent detail" and "open soundstage." The open-back design delivers deep bass and clear treble, though requires powerful sources for optimal performance. Some noted brightness with certain setups and stock tips could be better. Sound leakage limits portability.
Pros:
Open soundstage thanks to open back design
High resolution quad driver system with excellent technical capabilities
Deep, textured and layered bass performance
Clear and prominent midfrequencies with strong vocal intelligibility
Excellent treble extension with planar and piezoelectric synergy
Strong scalability across different source qualities
Maintained core tonal identity in all tested DAC and DAP pairings
Lightweight, ergonomic and robust full metal body design
Modular quality cable system with 3.5mm and 4.4mm support
Cons:
Requires higher quality and more powerful sources to fully demonstrate its technical potential
Open back design may cause some sound leakage, limiting portable use scenarios.
May produce a slightly bright or energetic sound with very detailed sources
The stock tips included in the box could have been better.
(Because in Kiwi's IEMs in the same price range, like Astral, the stock tips are really good.)
To read the full review, including source matching and comparisons with other IEMs, click here. >>
https://www.head-fi.org/showcase/kiwi-ears-septet.28165/reviews#review-43377
Excellent sound. Very deep, but not heavy bass. Excellent detail.
The IEMs are very good in terms of feel and performance. They're open-back in-ear headphones, meaning they offer no sound isolation. Furthermore, people around you will hear the same thing you hear. This won't be to everyone's taste.
The housing shape is quite comfortable, but I couldn't find the included tips to fit my ears comfortably. I used third-party tips. The metal housing feels cool at first. But once the housing temperature matches your body temperature, everything is fine.
Overall, the IEMs are excellent. I've covered this in more detail in the review.
Balanced, versatile tuning that blends musical warmth with technical clarity
Excellent sub-bass extension and dynamic driver texture without midbass bloat
Smooth, refined treble presentation—sparkly and detailed without harshness
Organic midrange tonality, especially strong with vocals and acoustic instruments
Surprisingly cohesive integration of four driver types—no obvious disjointed crossover artifacts
Impressive imaging and layering, offering a natural sense of depth and space mostly due to their open back The Kiwi Ears Septet doesn’t aim to be just another “jack of all trades” — it’s a carefully tuned, creatively engineered IEM that blends driver complexity with surprising musical simplicity. It’s not trying to be a studio tool like the Luna, nor a one-trick bass machine like some hybrids. Instead, it carves out its own lane: a tonally satisfying, technically capable quadbrid that feels more premium than its price suggests.
design and multi-driver configuration
Lightweight, ergonomic shells that are comfortable for long listening sessions
Good value for money, delivering quadbrid performance at a competitive price point
Full+review++%F0%9F%91%89+https%3A%2F%2Fyoutu.be%2FOr3mVfd73c0
The bright, crisp mid-to-high range with excellent separation was wonderful.
True open back soundstage, elite detail and technicalities, beautiful musicality. Plus a well built, retro design. 5 stars!
First, the headphones require significant burn-in; it took me two weeks. Second, they need a good source. Among my devices, the AK Kann Alpha and FiiO M15 handled them excellently; the F.Audio M20 did a slightly worse job, while the Hiby W3 II couldn't handle them at all. Third, do not use them with narrow-bore ear tips, as the low frequencies suffer greatly. In my case, Spiral Dot tips worked perfectly, so I stuck with those. Sound isolation is very good for this type of design, and the fit is excellent. The sound is great—and for the price, it is superb. Considering the sound quality, form factor, and the amount of technology packed into the housing, the price is phenomenal. Happy listening, everyone.
ｇｏｏｄ
With a powerful source and longer eartips the septet performing excellent. On the cayin RU3 with oval (short) eartips the septet sound is to bright. Things changed complitly on the Apos Gremlin tube amplifier (RU3 set to line out) with longer foamtips. Kiwi Ears should implement swapable nozzles and enclose longer hybrid silicon-foam-tips. Treble sensitive people can use Divinus Soundfilter.
パワーのあるDAPで鳴らすのが条件ですがドライバーをドライブさせると伸びやかでパワフル。それでいてバランスの良いベストサウンド！
Open stage , detailed and very well tuned sound !
They sound excellent !!
Recommended
Beautiful open soundstaging with great clarity . Love the way these iem sound .
Your order
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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.
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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
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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
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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.
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For faulty/missing items, please send an email to support@Linsoul.com for after-sale services. The following details are required.
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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.
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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?
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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.
Can I return an opened item?
Request a return within 30 days of delivery while the product is factory-sealed. Contact support for instructions before returning anything.
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.
What warranty applies?
Most products come with a 1-year warranty; cables and accessories have shorter or separate terms.
Processing Time
This product is currently in its pre‑order period. Pre‑orders apply to items not yet in stock, and shipping will begin once they arrive. Processing times are estimates only.
Pre-order Period: We may have ready stocks. Check this with us
Note:
- No cancellation of orders once ordered.
- All orders to be shipped out sequentially.
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