True Wireless Bluetooth Earphone Module

    40 Hours Non-Stop Music Playback
    AAC/SBC Wireless High-definition HiFi Esperience
    Multi-touch Function, Waterproof and Sweatproof
    High Quality Bluetooth Chip Bluetooth 5.3 Fast Connection
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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*.

About TRN

TRN is a high-fidelity headphone company that focuses on bass. Most TRN products emphasize excitement in the low-frequency region. They hope to create multifunctional headphones that can effectively navigate rock, pop, symphony, and large weaving styles. TRN's latest product, TRN BT20xs, is a true wireless Bluetooth headphone module.

40 hours non-stop music playback

We all know that for Bluetooth earphones, battery capacity is one of the important criteria for evaluating their performance. If you use TB20xs, you don't have to worry about battery level issues at all. It can play music continuously for 40 hours. And it only weighs 8 grams, so your ears won't feel tired either.

High Quality bluetooth chip bluetooth 5.3 fast connection

Compared to Bluetooth 5.2, Bluetooth 5.3 has an effective coverage range of 15 meters. At the same time, it only takes 0 seconds to complete the switching action between the master and slave headphones. The latency of Bluetooth 5.2 is about 300 ms, while the Bluetooth 5.3 used in TB20xs reduces the latency to about 100 ms. In summary, this update to Bluetooth has greatly improved both the user experience and feedback on actual data.

Easy to have AAC/SBC wireless HD high fidelity experience

TB20xs has multiple headphone pin jacks, which is very convenient for IEMs. It enables you to have AAC/SBC wireless HD hi-fi experience very easily. You can easily turn a wired IEMs into a wireless HD hi-fi Bluetooth headset at any time and any place. It comes right out of your pocket when you need it and is ready to go right away.

With multiple touch functions and waterproof and sweatproof function

TB20xs has convenient touch buttons. It can complete five touch functions: "power on/off", "previous/next track", "answer/send a call", "enter pairing mode", "play/pause", making it very easy to operate and use. The soft material makes it very comfortable to wear, and it is also waterproof and sweat resistant.

Bluetooth Encoding
Bluetooth Format
Bluetooth 5.3
Effective Signal Range
Charging Port
Bluetooth Chipset
High Quality Bluetooth Chip
Battery Power Capacity
80mAh(per earpiece)
Charging Case Power Capacity
PlayBack Time
(Charging case + earpieces)
40 hours
13 hours when using both earpieces only
Charging Voltage
DC5V, 1A
Charging Time
(modules/charging case)

Coming soon...


Coming soon...

Customer Reviews

Based on 11 reviews

Everything works great.
However I am used to smaller cases that can easily fit in the pocket. The battery life is great, have only charged them the once when I received them 2 months ago, but would honestly prefer sacrificing it to make them a bit more portable. The case is quite thick.

Dimples for the earphones would be nice, as with my KZ ZS10 PRO's attached to the connectors, it feels like a tight fit and I fear damage with them breaking in my pocket. Hopefully will be okay going forward

Unreal Tyrannical
Very good (Worked with my Chu 2s)

Worked very well considering the price to cost. Had no issues with connectivity, sound was fine, and had long battery life.
The only downsides were the easy to press buttons, the inability to keep IEMs attached to the BT20 whilst putting it away, and the case was a bit too big height wise. (Perhaps make it more wide and less tall, have the ability to attach IEMs whilst charging in the case, and some slightly tougher buttons and it'd be 5 stars.)

Excellent and Affordable!

What a brilliant and affordable product! It converts my IEM into a somewhat TWS. Bluetooth connectivity is great. Noise floor is low/zero too.
However, it's really meant for smart phones instead of DAPs. It was way too loud on my DAP and I couldn't adjust the volume level. It's meant to be paired with Android/iOS phones. I have not tried out the call features but this isn't very important.
I'm just happy that my wired IEMs can now be converted into wireless IEMs now. It's extremely convenient and the sound quality is great.
I'll recommend this anyone who prefers wireless to wired IEMs or just wants something wireless.


so happy I got these. Now I can make all my iems portable and ditch the cables and usb c adapters. The sound and build quality are great. Bluetooth connection - instant, no glitches so far. The case is a bit of a monster in terms of the size, but on the upside it's 40 hours of play time.

Wade Figueira
Great Device

TRN BT20 XS is a great device, never run out of power during the day. Holder is small enough to fit in your pocket and holds additional charge.

John Smith
BT20XS review

Summary: Surprisingly great for the price, the battery life is impressive, the sound quality is good with some caveats. At the price I got them (around $20), they are a very very good deal.

I'vve been using the bt20xs from linsoul every day for around a month now.
I am using them with KZ EDX PRO in-ear monitors, because the KZ EDX PRO havve 16ohm impedence, making them better for a portable bluetooth device such as the bt20xs. I tried a couple of different IEMs, but the KZ-EDX PRO sounded the best.

The battery life is around 10 hours, but I am using bluetooth4 on an android phone right now.
Technically bluetooth 5 and 5.3 phones should have even longer battery life (also depends on the IEMs attached).

I use fiio music to listen to music and I found that at lower volume, the quality of the sound is lower when using BT20XS.
I used the equalizer in the phone app and put evevrything on the lowest, now the quality sounds much better at around 50%-70% volume.
I think this is partially because I'm on bluetooth4.

All in all, now it sounds great, I run with them every day. Totally worht the price and worth picking up.

The real test is ahead of the BT20XS: How does it handle winter
In the winter it gets as cold as -30C here and I still go running every day, so I'm interested to see if there are any issues I will face because of the cold.
For example using normal IEMs with wires in the cold is not good, because the wires become very fragile at -30C and break much more easily.
I'm hoping the battery does not take damage or run empty too fast with the cold and that the construction of the bt20xs won't become fragile with the cold.

Werner Kienberger
Another satisfied customer!

Great product, working without any hassle at all. Battery time is great. And the sound quality (with ZS 10 Pro) better than expected! For the low price (less than 20 Bucks) a real steal!

Rob Ash
Great product (0.78mm 2-pin)

Converts my IEM into viable Bluetooth option. Bluetooth 5.3 is excellent, I have no connectivity issues when using them. No audible issues, this adapter provides more than enough power to drive my IEM's. The customer service updates on my purchase was also very good, I was able to track my parcel from dispatch to delivery. I will be using Linsoul for future Audio purchases.

Value for money

Unfortunately there is no volume on the unit so you are maxed out with the source volume. Other than that it's a decent piece that gets the job done

Sophanna Ven
Good for the price

good for turning your iems into wireless

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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