4BA + 1DD Hybrid Drivers Reference-grade In-Ear Monitor

    A newly-designed acoustical housing
    Acoustical airflow design
    Painstakingly tuned, Suitable for wide music genre
    Rich accessories
Product Price
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*.

Innovative hybrid drivers' technology 

TRN ST5 includes 5 drivers. Made of rare and rigid material, the beryllium-coated 10mm driver delivers a crisp, fast, and responsive low-end that gives a natural sounding tonality. TRN ST5 is outfitted with two 30095 tweeters + two 50060 midrange balanced armature drivers. Full-range sound coverage with a highly-sophisticated electronic crossover circuitry. Clear separation across the audio frequency spectrum. TRN ST5 has an expansive soundstage that is precise, layered, and highly resolving.

A newly-designed acoustical housing  

TRN ST5 uses customed shells precision-milled from aerospace-grade magnesium alloy using a 5-axis CNC machine, carefully hand-finished to perfection, and finally varnished with a multi-layered ceramic coating that is both beautiful and durable.

Acoustical airflow design 

TRN ST5 airflow control helps equalize internal chamber pressure through a specially-designed vent in front of driver assembly, resulting in a "cleaner" bass response, exceptional image clarity, superb detail retrieval, and a wide soundscape.

Painstakingly tuned 

Professionally-tuned electronic crossover network delivers every note created by the artists and musicians with a balance of harmony and every subtle nuance. TRN ST5 earphones will take your listening pleasure to the next level and excite your hearing with sound beyond imagination, savor the beautiful melody.

Rich accessories

8-core high-purity silver-plated oxygen-free copper cable, 3.5/2.5/4.4 mm audio connectors, 7 pairs ear tips (balanced x3 (SML) + bass x3 (SML) + memory foam x1).At TRN, we value your experience. It is fully accessorized, just for you!

Product model
Jack type
Ear hook
Transducer type
Hybrid In-Ear Monitors
Frequency response
Connector type
22Ω @1kHz
Moonshine silver
Weight with cable
Cable length

Coming soon...


Coming soon...

Customer Reviews

Based on 2 reviews
Very Solid tuning - Analytical yet Fun

TRN ST5 is an excellent set of earphones that really demonstrates that TRN is putting a lot of thought and care into their products. As I listen to this set, it's very apparent that TRN didn't just decide to make a 5 driver hybrid set - they had an intention for this set, and found the right driver configuration and implementation to bring it to life. The fruit of their efforts is a very clear sounding set which achieves a rare marriage of analytical tuning and stimulating tone. This is a balanced sounding set that emphasizes cleanliness all throughout the Frequency response, and it does so very gracefully, with each element of the sound revealing the intentionality of the tuning implementation.

The treble on the st5 is analytical without being harsh. It is well balanced with the rest of the tuning, providing clean detail without obscuring or coloring the sound. These earphones have a very dry (non reverberant) treble which absolutely shines on well engineered tracks. The st5 extends well into the air frequencies, without being too abrasive. Although on harshly recorded tracks, you may notice a sharp edge on sounds that already lean into sharpness (hard snares, very buzzy acid leads, etc) but I don't think the treble is over emphasized. You may, however, find that it highlights the audio engineering flaws (for good or for bad).

The bass is also presented in a neutral way, stepping into the spotlight only when called to do so, displaying lots of texture and detail, and with a rich low end that's capable of great diffuse bass-scapes, as well as tight punchy kicks and dynamic textures. The overall sound of the st5 can be a little cool at times, with the balanced armature presenting a mechanical feeling that underscores detail and clarity, but undermines a sense of realism that you get from the natural resonance of other driver types. However, the bass, being a dynamic driver, brings that natural feeling back into the sound. On tracks where sub bass takes more prominence in the mix, these iems feel spacious and warm, as the rumble of the dynamic driver fills in the thin tonality of the upper mids and treble.

The detail is fairly good on this set, and I think TRN did a great job matching this dynamic driver with these BAs, as they achieve a similar level of detail reproduction, which can be a pitfall for hybrid sets, where the dynamic driver is treated as supplemental driver to the BAs. But St5 has very well matched detail on the dynamic driver, which helps to hide the crossover, and makes this set standout among its hybrid counterparts. The st5 blends the different drivers very nicely into a cohesive tuning that avoids some common problems that plague hybrid driver earphones. That is to say, the drivers don't get in each other's way, neither creating masking nor mud within the sound. But while the tuning is very cohesive, you can fairly easily hear the difference in resonance of bass notes being handled by the dynamic driver and upper frequency notes being carried by the Balanced Armature drivers. You can hear this expressed as stage size, with bass notes sounding wider than the mids and treble, which sit in a narrower stage. This isn't necessarily a bad thing though, as it creates more depth in the stage for the sound to spread out, and actually sounds quite good, even if not technically accurate.

The imaging, while not the most precise, still provides a natural sense of movement, and above average sense of sound placement in the stage, with distinctive placement at varying distances. The stage size is not huge, nor does it have a lot of depth front to back, so the stage mostly takes place from side to side, with a shallow, but noticeable, front-do-back depth.

The TRN ST5 is a truly impressive iem at the $60 price point, and an easy recommendation for anyone looking to buy a clarity-focused set that makes you want to dance. I thoroughly enjoy this set, and even prefer it to some of my other much pricier hybrid and BA sets.

TRN ST5 Stars Out of 5

"Painstakingly tuned, Suitable for wide music genre"

This is part of TRN ST5's description and it is definitely suitable for (my) wide music genre! $60? My song files are all in FLAC or DSD and the ST5 sounded WEW. MIND BLOWN, period.

And for this price, you get a cable that comes with modular plugs. How convenient is that! I use either 3.5mm or 4.4mm balanced for my music players and laptop so this is a bonus.

I tested the earphones with many different songs, including Chinese, English, Korean, Japanese, Instrumentals and etc., and these are some that I remember.

邓丽君 - 甜蜜蜜 (MandoPop)
一口甜 - 圈住你 (MandoPop song)
永彬Ryan.B - 像极了 (R&B / Soul)
薛之谦 - 演员 (MandoPop / R&B)
张信哲 - 爱如潮水 (MandoPop song)

ABBA - Dancing Queen (Eurodisco / Pop song)
Marina - About Love (English Pop song)
WALK THE MOON - Shut Up and Dance (Electropop / Dance Pop)
3 Doors Down - Here Without You (Alternative/Indie, Metal, Rock, Pop)

Aqua Timez - Alones (JPop / Japanese Indie / Japanese Rock)
Aqua Timez - Sen no Yoru wo Koete (JPop / Rock)
Fancy - TWICE (K-pop / Korea Dance / Electronic)
石川 綾子 - 君をのせて (Classical / JPop)

Lee Young Ji - I Am Lee Young Ji (KPop / Hip-Hop Rap)

One thing that I do not like about the ST5 is not about its tuning but the number of small plastic bags used. You can tell from the photo that TRN used so small plastic bags for the black ear tips, white ear tips, foam ear tips, modular plugs and cable. A total of 7 small plastic bags and 1 big one for the cable. It is not environmentally-friendly and it is hard for users to find the stuffs. TRN can consider using 1 big plastic bag to put all the ear tips?

Other than that, I am so very glad to have found out about the TRN ST5. More people should try out this model. I will definitely recommend this to all my friends and family!

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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