High-Fidelity Bluetooth Distortion-Free Audio Decoder

    Flagship AK4499 DAC Chip
    Multiple Input/Output
    Latest Bluetooth Connectivity
    Gorgeous Aluminum Alloy and Glass
    Full-Functional Remote Control
Regular price €859,99
Sale price €859,99 Regular price

Industry-Leading Chipset

The SMSL M400 features Flagship DAC chip AK4499, the audio industry’s highest performance paired with ultra-low phase noise crystal oscillators to provide noise-free and high-quality sound rich with details. When using an A-weighted measurement, THD+N is as low as 0.000058%. Besides, it also supports MQA decoding, just as if you were actually in the recording studio.

Multiple Input/Output

SMSL M400 has multiple input options, including USB, Optical, Coaxial, Bluetooth, and IIS input modes. The highest Bluetooth module features various protocols, for instance, UAT, LDAC, aptX-HD, AAC, and SBC. Besides, there are two outputs ports: full-balanced output and RCA unbalanced output.

Latest Bluetooth Connectivity

The SMSL M400 equips with Qualcomm Bluetooth module, which supports LDAC, APTX / HD, SBC, AAC and the industry's highest specification 24bit / 192kHz UAT format. UAT is a high-definition wireless audio Bluetooth transmission standard developed by HiBy. It supports Bluetooth transmission streams of up to 1.2Mbps and sampling frequencies up to 192kHz, which is faster than any previous standard.

Gorgeous Aluminum Alloy and Glass

The M400 features an excellent visual appearance with a whole piece of tempered glass on the top and an integrally formed aluminum alloy shell, which effectively prevents oxidation. The use of non-magnetic raw materials can not only shield the interference of external magnetic fields but also have no magnetic fields. It is worth mentioning that the M400 can further improve the quality of music.

Full-Functional Remote Control

The SMSL M400 characterizes a color LCD display on the front and newly developed user interface that shows active format type, active input type and more details. It also follows with a full-functional remote control that you can control the device with ease.

Inside the Box

  • 1 x SMSL M400
  • User Manual

30-Day Return Policy

You may return any non-customized product that is still factory sealed, within 30 days upon receiving it. For items that are damaged, incorrect, or faulty upon delivery, Linsoul will assess the issue and provide a solution accordingly.

Technical Details

Dynamic Range
Signal to Noise Ratio
PCM Decoding
up to 32-Bit/768kHz
up to DSD512
Powerful OPAMPs
OPA1611 & OPA1612
Multiple Input Support
USB, Optical, Co-axial, IIS, and Bluetooth
Ultra Hi-Res codecs
UAT, LDAC, AptX HD, and more
Dual Output Ports
Fully Balanced XLR Output
Unbalanced RCA Output
Power Consumption

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: Expected to be available in early December


  • 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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