AK4191 & Dual AK4499EX DAC Chips DSD512 Bluetooth Audio Decoder

    Flagship AK4191 & Dual AK4499EX DAC Chips
    Brand New 3rd-Generation XMOS USB Solution
    High-End Bluetooth Connectivity
    Multiple Input & Output Options
    Built-In Digital Filters & Low-Noise Power Processing
Regular price $959.99 USD
Sale price $959.99 USD Regular price

Flagship AK4191 & Dual AK4499EX DAC Chips

To tap into the full potential of the chips, SMSL has equipped the D400EX with a flagship-grade Dual DAC chipset featuring two AK4499EX latest-generation DAC Chips from AKM Technologies. D400EX also houses one AK4191 Chip to complement the AK4499EX DACs. The AK4499EX is a 32-Bit flagship DAC chip from AKM that provides unmatched performance while decoding high-resolution audio signals.

Brand New 3rd-Generation XMOS USB Solution

To get the best out of the flagship DAC Chipset present on the D400EX, SMSL has featured an XU316 USB processor from XMOS Technologies. It enables the D400Ex to decode high-resolution 32-Bit/768kHz PCM signals and native DSD512 audio signals.

High-End Bluetooth Connectivity

Supporting high-resolution wireless Bluetooth connectivity for signal input, SMSL D400EX high-tech Desktop DAC adopts the latest QCC5125 Bluetooth processor from Qualcomm that supports high-res LDAC, AptX HD, AptX, SBC, and AAC transmission protocols. especially, LDAC allows the users to stream at 24-bit/96kHz bit rate.

Multiple Input & Output Options

D400EX features a wide range of input options, including IIS, USB, Coaxial, Optical, and Bluetooth. Users will be able to easily connect the D400 EX with different sources easily. Besides, SMSL D400EX utilizes High-quality gold-plated input and output connection terminals.

Built-In Digital Filters & Low-Noise Power Pro cessing

Adopting seven different digital filters for PCM signals built into the D400EX, the SMSL equipped with multiple low-noise regulated power supplies to provide a stable, reliable and funny low-noise power supply system. Users can use these to adjust the output more to their liking.

Inside the Box

  • 1 x SMSL D400EX
  • User Manual

1 Year Warranty

The SMSL D400EX Comes with a 1 year warranty on the AMP & DAC only. Warranty doesn't apply to the included accessories.

Technical Details

USB /Optical/ Coaxial / l2S /Bluetooth /AES
0.000053%(-125.5dB) (A-WTD)
Dynamic range:
XLR: 133dB
RCA: 128dB
USB transmission:
USB compatibility:
Windows 7 / 8/ 8.1/ 10, Mac OSX、Linux
Bit depth:
USB / I2S: 1bit,16 ~ 32bit
Optical / Coaxial: 1bit, 16~32bit
Sampling rate:
USB / I2S-
PCM: 44.1 ~768kHz
DSD: 2.8224~22.5792MHz
Optical / Coaxial-PCM: 44.1 ~192kHz
Bluetooth specification:
LDA: 24bit/96kHz (990kbps/660kbps/330kbps)
aptX-HD: 24bit/48 kHz_576kbps
AptX: 16bit/44.1 kHz_352kbps
SBC: 16bit/44.1kHz_328kbps
AAC: 16bit/44.1kHz_320kbps
Power Consumption:
Standby power:
40×188X46mm (WxHxD)

Processing Time

This product is in Pre-order period. Pre-orders are provided for items that have not reached us and will take some time to be shipped out.

Pre-order Period: 10-15 working days. All orders to be shipped out sequentially. No cancellation of orders once ordered.


  • No cancellation of orders once ordered.
  • All orders to be shipped out sequentially.

Authentic Products

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 and accessories*.

Online Support

Need help?, we are here to assist you
Monday - Friday: 09:00 – 18:00 (UTC+8)

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30-Day Return Policy

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