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AK4499 is a flagship chip of AKM which adopts current output structure and 4 channels design, We parallel every 2 outputs to be one channel of D90 to get better performance. Due to the full balanced structure of D90, it can be balance output and single end at the same time. You can choose either of them and it’s more convenient to use with other devices
With the AK4499+XMOS, D90 supports up to 32bit/768kHz and DSD512 which far more exceeds the CD and SACD. Moreover, we customize the Thesycon driver for Win7 or above to get a better performance
D90 adopts CSR8675 chipset to support Bluetooth 5.0 and LDAC/AAC/SBC/APTX/APTX LL/APTX HD protocol. D90 could achieve 24bit 96kHz Hi-Res transmission with LDAC, the Bluetooth could have good sound performance from right on. If you do not need the Bluetooth input, you can completely turn it off in the menu
AK4118 is currently the lowest jitter of S/PDIF receiver, with the good compatibility, it is used for receiving OPT/COAX/AES that all support up to 24bit/192kHz. And D90 applies the CPLD, focusing on the clock processing and signal optimization. CPLD combines with the accusilicon femto-second to bring a lower jitter effect, while coordinates processing of digital signal optimization to improve signal quality and stability
D90 has various inputs such as AES/ USB/ OPT/ COAX/ IIS/ BT. USB and IIS input support 32bit/768kHz and DSD512. AES/OPT/COAX input support 24bit/192kHz. The BT supports 24bit/96kHz for LDAC. And IIS input can be set in the machine and is compatible with most IIS signal that uses HDMI transmission in the market.
Linsoul Audio is the authorized distributor. All products are authentic and genuine.
We are located in china but send our products worldwide for free.
We provide 1 year warranty for the all products except the cables*.
We reply to all support inquiries within 3 working days.
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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.
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 is offered free worldwide for orders under $199 USD (with some exceptions), but please consider that delivery times may vary considerably depending on your country, up to 90 Days.
All items over $200 include free express shipping (DHL or similar). If your order total is under $200 you can manually add Express Shipping during the checkout period for $15.00 USD
We are generally able to ship to most countries via DHL Express, and many countries via Standard Shipping. You may clarify with our team to see whether Standard Shipping is available to your country.
*Note: We can only do Standard Shipping for the UK, India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.We have two shipping options - Standard Shipping and Express Shipping via DHL Express.
For in-stock products, your order will be shipped within 3 working days.
Customized items will take a longer time (do check in with our staff for more information).
On normal non-sale days, once your parcel has been shipped out:
For Standard Shipping, it takes about 2-3 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country and its customs. The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to DHL Express 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 circumstances1. Kindly contact your local courier using the local tracking number. We will not process a refund or reshipment of the parcel since it has been shipped.
2. Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation:
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 shipping cost incurred.
For faulty/missing items, please send an email to support@linsoul.com to process warranty. In your email, please choose an appropriate Subject Title. Kindly include your Order Number, and state your issue clearly. Please also attach photographs/videos as “proof”, if any.
Our team aims to review your email within 3 working days.
For other queries, the fastest way to contact us is via Discord: https://discord.com/invite/5yfHcAu
Please kindly check the following guide first: CIEM Ordering Guide
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.
We collaborate with 4PX, UBI, SF Express and DHL Express.
