Astrotec S90 Pro
Dual Knowles BA Driver TWS Wireless Bluetooth 5.0 Earbuds
- high quality chip with further optimization
- Fast Charge and QI Wireless Charge.
- Technical Excellence Meets User Preference
charging case extends it to 32 hours of playtime, 150 days standby time
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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
Linsoul Audio is the authorized distributor. All products are authentic and genuine.
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*.
Knowles Dual Balanced Armatures.
Astrotec S90 Pro take advantage of the BA drivers to create a HiFi level balanced three frequencies, yet rich in details, broad in sound stage. The BA drivers decrease the distortion rate, increase the resolution and extend the flexibility of high frequency which is hardly found in current TWS products
Qualcomm aptX Chip
S90 PRO adopts this high quality chip with further optimization, along with Bluetooth 5.0, it supports many formats like APTX, AAC, SBC decoding formats while maintain a fast strong and ultra-stable connection
Fast Charge and QI Wireless Charge.
With a single charge of 15mins, you can enjoy up to 3 hours playtime. The type-C charging case is also compatible with Qi wireless charging device. It saves your space and offers ultra convenience
MEMS Microphones with CVC Noise Cancellation.
Each earbud is equipped with MEMS microphones that utilize the latest CVC noise reduction technology. When making a call, environmental noises are reduced while your voice is retained so you sound louder and clearer on the other end.
Up to 40 Hours of Playtime.
A single charge gives you a full 8 hours of listening, while the charging case extends it to 32 hours of playtime, 150 days standby time. And when the case needs a power boost, simply set it down on a wireless charger.
Instructions for operation
Press one second to answer the phone or hang up, play/pause
Press four times to call out Siri or Google assistant
L: Press 3 times for previous song
R: Press 3 times for next song
L: Press 2 times for volume down
R: Press 2 times for volume up
WHAT'S IN THE BOX
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.
ORDER PROCESSING3 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 Shipping15 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 Shipping3-6 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
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?
- 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.
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.
1) Send an email to support@Linsoul.com 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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Let customers speak for us3769 reviews
The build quality and comfort of the BLON B50 is great. Unfortunately, that didn't translate to audio fidelity for me. I found the sound to be thin and constrained. Playing with adjusting the pads might help. But for just a little bit more money the ThieAudio Ghost is a significantly better sounding headphone, although they aren't closed back. If closed back is a requirement, I think the Rode NTH-100s provide a better overall value than the BLON B50, even with the decent bump in cost.
Thank you for your valuable feedback, we will listen to your suggestions carefully, Linsoul will be better with you.
For any other questions, please feel free to let us know.
Hope you have a wonderful day!
I am very satisfied ,ordered on 10.3.and 13.3.delivered to the Czech Republic. They met my expectations, beautifully balanced, I'm happy thanks
My first pair of budget iems were the KZ zsn pro X and they left alot to be desired in both sound quality and build quality. Now that I have the zero's, I can say they blow my old pair out of the park. The detail in the 7hz zero is amazing for 20 dollars and sounds great with vocals for kpop. I personally eq'd them to include a slight bump in the mid bass frequency and I love it. Would definitely recommend to someone who just wants a nice balanced listening experience with room to experiement with EQ.
I love them. Already spamming my whole family to buy them as well.
I am relistening to music I know and am discovering new details. The scene is so large. And all the different type of sounds are really precise, basses and highs.
Still awesome cable(i have it for my HD600) BUT not compatible for Meze 99 Neo and 99 Classics.
They took a little longer to burn in than the last IEM's I purchased, but are a huge bang for buck product.
My preferences don't seem to line up with most experts/reviewers. I found the T4 + to be a nice relaxing listen with plenty of detail.
I fell for the YouTube review as well, and wish I had waited for other opinions... These have an awful echo with certain frequencies; you can literally hear sharp sounds reflecting and pinging inside the cans. And this site's return policy doesn't even last as long as the burn-in period stated in the user manual.
I took off the beautifully crafted headband and used it to fix my Hifiman HE-4XX.
Sorry for the inconvenience.Please feel assured that we will try our best to help you to fix the problem.
Our team will send you an email. Please kindly follow their instructions to test. If you encounter any problems in the future, we sincerely suggest that you contact us via email (support@Linsoul.com)at the first time,because we can solve your problems in a more comprehensive way.
If you need any help from us, please feel free to let us know.
Have a nice day!
It follows a mild v shaped but it's very well done, at $55 it punches above it's own weight, I very much recommend it.
Comfortable, sound great. Not too expensive. Exactly what I wanted.
I purchased the BTR7 for the increase in power over the BTR5 and the 4.4 Pentacon connection.
While the bulk of my listening is portable audio, the extended battery life of the BTR7 means I can use it to take high resolution audio and feed it from the BTR7 directly into my HIFI system pure and direct… listening at concert levels…. Well till my neighbours complain and I get a grapefruit through the window…
The thing I miss the most on the BTR7 is the lack of a clip or holder to secure it to yourself while you are on the move…. This will force you to get inventive and sort out some sort of lanyard holder or in my case modifying an old multi tool pouch so I can clip it to my belt.
The battery life is reflected in the way it is used, if you are driving planar headphones through the 4.4mm connection… you might get 3 or 4 hours…. Listening to IEM’s through the 3.5mm connection and the battery life will double…
The other feature I found is the support of MOA encoded music from Tidal… this is awesome and something I enjoy listing to…
Interfacing with the BTR7 menus is best carried out using the Fiio Control App, which you can download along with firmware updates from the Fiio website.
I am very pleased with my purchase and can happily recommend the BTR7