Crafting the Art of Sound with Ultimate Precision

The D400 MK2 is a studio-master-grade DAC engineered to redefine purity and resolution in audio reproduction. Its chassis is milled from a single block of aerospace-grade aluminum alloy through high-precision CNC integrated carving, delivering a sleek, metallic finish with clean, flowing lines. Beyond its visual elegance, the all-metal construction provides superior electromagnetic shielding, effectively isolating external interference and maintaining a pristine internal environment for the circuitry.

Flagship AKM Chipset for Studio-Master-Grade Sound

Powered by a flagship AKM chipset featuring AK4191 + AK4499EX DAC chips, the D400 MK2 achieves an exceptional signal-to-noise ratio and an ultra-low distortion of 0.00006% (-124dB) — as quiet and pristine as the deep sea. Every melody, every overtone, and every breath of the performance is rendered in its most authentic form, transforming listening into an immersive auditory art experience. With 132dB dynamic range, the D400 MK2 delivers pure, transparent audio with remarkable clarity.

OCXO Clock for Stable, Noise-Free Sound

Equipped with a built-in ±5ppb, 10MHz OCXO (Oven-Controlled Crystal Oscillator), the D400 MK2 synchronizes every audio signal with atomic-level precision. Soundstage positioning is rendered with pinpoint accuracy, imaging remains crisp and three-dimensional, and musical notes flow naturally and effortlessly. The proprietary CK-04 clock processing circuit further reduces clock jitter at its source, ensuring stable, smooth, and seamless audio playback across all connected sources and formats.

3rd-Gen XMOS with Robust High-Bit-Rate Decoding

Featuring the all-new third-generation XMOS XU-316 high-performance digital processing core, the D400 MK2 supports hardware-based PCM decoding up to 32-bit/768 kHz and native DSD playback up to DSD512, with full support for MQA decoding and MQA-CD playback. Whether it's high-bitrate digital audio sources or classic audiophile CDs, it decodes them completely and reproduces them losslessly, allowing every music file to shine with its finest artistic brilliance.

Full-Range Inputs and High-Res Bluetooth Decoding

The D400 MK2 offers full wired support for all input interfaces: USB, optical, coaxial, AES, and I²S. I²S supports native DSD transmission, while coaxial and optical support DoP64 — ensuring lossless, pristine signal transfer every step of the way. The wireless connection is powered by a high-end Qualcomm Bluetooth chip, offering full support for LDAC (24-bit/96 kHz), aptX/HD, SBC, and AAC high-definition codecs. Even wirelessly, you can enjoy Hi-Res grade audio quality — art, untethered.

Meticulously-Tuned Hardware with Premium Details

The D400 MK2 features a low-noise power management system with multi-channel independent low-noise voltage regulators providing dedicated power to the DAC, op-amps, digital, and analog sections. A tempered glass, fully laminated color IPS display delivers vivid colors and clear system status at a glance. High-end gold-plated input and output terminals offer superior oxidation resistance and low transmission loss. The device has earned the prestigious Hi-Res Audio certification from the Japan Audio Society (JAS), a testament to its exceptional sound quality.

Technical Details

Product Name
SMSL D400 MK2 Studio-Master-Grade DAC
DAC Chipset
AK4191 + AK4499EX
XMOS Core
3rd-Generation XU-316 (MQA Decoding & MQA-CD Support)
OCXO Clock
±5ppb, 10MHz with CK-04 Jitter Reduction Circuit
Inputs
USB / Optical / Coaxial / AES / I虏S / Bluetooth
Outputs
RCA (2.5Vrms) / XLR (5Vrms)
THD+N
XLR 0.00006% (-124dB); RCA 0.00008% (-121dB)
Dynamic Range / SNR
XLR 132dB; RCA 126dB
Bluetooth Codecs
LDAC (24bit/96kHz), aptX-HD, aptX, AAC, SBC
Max Decoding
PCM 32-bit/768kHz, Native DSD512
Power Consumption
<10W
Dimensions
254 × 189 × 46 mm
Weight
2.7kg / 4.18lbs
Inside the Box
  • SMSL D400 MK2 DAC ×1
  • Remote Control ×1
  • USB Cable ×1
  • Power Cable ×1
  • Bluetooth Antenna ×1
  • User Manual ×1

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.

1 Year Warranty

Most products within our store come with a 1 year warranty. Please check our terms of service to see more.

Processing Time

This product is currently in its pre‑order period. Pre‑orders apply to items not yet in stock, and shipping will begin once they arrive. Processing times are estimates only.

Pre-order Period:

  • 1 week. 

Note:

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

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