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$749.99 USD

AK4499 DSD512 Hi-Res Bluetooth 5.0 USB DAC

    Support Hi-res music of DSD512 PCM32bit768kHz
    Bluetooth 5.0 redefining the Hi-res wireless audio with LDAC
    Various input interfaces-AES/USB/OPT/COAX/IIS/BT
    Switchable power voltage for global used
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Balanced DAC AK4499 XMOS XU208 I2S 32bit 768kHz DSD512 Black

A direct successor to the D70 Topping, the D90 benefits from the same refinements as its big brother while updating its DAC with a newer and more efficient version, the AK4499 AKM. For the rest, it largely follows the excellent internal design of the previous model and its exceptional performance..

DAC AK4499 & Accusilicon Clocks

New flagship from AKM, the AK4499 DAC chip allows precise, fast and clean conversion of high-resolution audio files. The D90 thus integrates on its digital-to-analog conversion stage an AK4499 chip with Thesycon drivers allowing transparent and rich sound reproduction and supporting PCM files up to 32bit 768kHz and DSD up to DSD512 (via USB and I2S). The DAC is combined with a pair of AccuSilicon 451584MHz and 49.1520MHz high-end femtosecond clocks and a CPLD. These allow a perfect synchronization of the data signals for an absolutely impressive jitter attenuation.

Connectivity & Features.

With its many features and connections, the D90 can be integrated into a vast majority of audio systems, offering many options for use and installation. For its input connectivity, there are AES, USB-B (XMOS), Coaxial, Toslink Optics, and I2S LVDS via HDMI. Note that this last input has several selectable modes to adapt to your other I2S LVDS devices. On the output side, the D90 offers unbalanced RCA Stereo and balanced XLR. The D90's intelligent design allows only one or both outputs to be activated at a time. With its integrated volume control, the D90 also acts as a preamplifier since it includes a volume controller. This volume control function can however be disabled so that the D90 can only be used as a DAC with output levels constantly at their maximums, i.e. 4Vrms for XLR output and 2Vrms for RCA output.

USB XMOS XU208 Interface & SPDIF AK4118 Receiver

For its digital interfaces, Topping once again chooses very high quality and performance by integrating into its D90 an XMOS XU208 USB chip supporting high sampling rates up to 32bit 768kHz and up to native DSD512. For SPDIF streams, an AKM AK4118 AKM chip processes the signal with extremely low jitter. This last chip is used for the Optical, Coaxial and AES inputs and allows sampling rates up to 24bit 192kHz PCM to be achieved on the latter.

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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.


1 Year Warranty

We provide 1 year warranty for the all products except the cables*.


Online Support

We reply to all support inquiries within 3 working days.

Product type
DAC Chip
AKM AK4499
USB Interface
SPDIF Interface
5.0 / Apt-X HD / LDAC
1x I2S LVDS (HDMI) 1x USB-B (XMOS) 1x Optical Toslink 1x Coaxial SPDIF 1x AES/EBU
1x Balanced XLR 1x Single-ended RCA
Supported sampling rates
USB : PCM up to 32bit 768kHz / Native DSD up to DSD512 / DSD DoP up to DSD256 I2S : PCM up to 32bit 768kHz / DSD up to DSD512 Coaxial, Optical, AES : PCM up to 24bit 192kHz
Output voltage
RCA : 2Vrms @ 0dBFS XLR : 4Vrms @ 0dBFS
Dynamic range (A-Weighting)

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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 $199 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.

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

Shipping FAQ's

Which countries do you ship to?

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.

How much does shipping cost?

We have two shipping options - Standard Shipping and Express Shipping via DHL Express.

  • Standard Shipping is free, while Express Shipping is 10-35USD depending on your country. If your order is over 200USD, Express Shipping is free.
  • Shipping fees exclude import taxes or processing fees that might be applicable for your country. Linsoul is not responsible for any form of such fees.

How long does it take to process my order after it is placed?

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 circumstances

Which countries do you ship to?

1. 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:

  • Wrong address or phone number provided by recipientRecipient was uncontactable when courier company contacted
  • 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 my 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 shipping cost incurred.

How do I get help for my order?

For faulty/missing items, please send an email to 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:

How do I order Custom In-ear Monitors (CIEMs) on Linsoul?

Please kindly check the following guide first: CIEM Ordering Guide

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.

What shipping companies do you use?

We collaborate with 4PX, UBI, SF Express and DHL Express.