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  • Support MQA decoding, support MQA-CD;
  • New 3rd generation XMOS XU-316, PCM support up to 32bit/768kHz, DSD support to DSD512;
  • Flagship DAC chip 1 AK4191+ 1 AK4499EX, tap all the potential of the chip, distortion as low as a staggering 0.00006% (-124dB);
  • Use 5 high-end dual op amps and a large number of audiophile components;
  • Adopt 2nd PLL to eliminate JITTER during SPDIF transmission;
  • The new self-developed CK-03 clock processing circuit greatly reduces clock jitter;
  • Support DOP independent display function, accurately determine the current decoding format;
  • USB, optical fibre, coaxial , AES, I2S support DSD transmission, coaxial and optical fibre support DOP64;
  • Using tempered glass full lamination colour IPS display.
  • Built-in low-noise power processing, while improving power efficiency, lower power consumption;
  • Combined with multiple low-noise regulated power supplies, it provides a stable, reliable, efficient, and low-noise power supply system.
  • Qualcomm high-end Bluetooth chip, support LDAC (24bit/96kHz), APTX/HD, SBC, AAC;
  • High quality all-aluminium alloy shell, support high quality gold plated input and output connection terminals;
  • Japan Audio Association (JAS) Hi-Res certification;
  • Equipped with remote control and full-featured remote control.
SMSL Audio D400 PRO Single AK4499EX Chip DAC Specifications
Input USB/Optical/Coaxial/I2S/Bluetooth/AES
Output RCA/XLR
Output Level TXLR 5Vrms
RCA 2. 5Vrms
Output Impedance XLR 200Ω
RCA 100Ω
THD+N XLR 0.00006%(-124dB)(UN-WTD)
RCA 0.00008%(-121dB)(UN-WTD)
Dynamic Range XLR 132dB
RCA 126dB
RCA 126dB
USB Transmission Asynchronization
USB Compatibility Windows 7 / 8 / 8.1 / 10 / 11(needs drive)
Mac OSX 10.6 or later,Linux(driveless)
MQA Decoder USB/Optical/Coaxial
MQA-CD Decoder Optical/Coaxial
Sampling Rate USB / I2S PCM 44.1 ~ 768kHz
DSD 2.8224 ~ 22.5792MHz
Optical / Coaxial PCM 44.1 ~ 192kHz
Bluetooth specification
LDAC 24bit/96kHz (990kbps/660kbps/330kbps)
aptX-HD 24bit/48 kHz_576kbps
SBC 16bit/44.1 kHz_352kbps
AAC 16bit/44.1 kHz_320kbps
Power Consumption <10W
Standby Power <<0.5W>
Size 254x189x46mm (WxHxD)
Weight 19kg / 4.18lbs
  • SMSL D400 Pro High Resolution USB Desktop DAC
  • Full-function remote control
  • User Manual
  • Power Cable
  • USB Cable

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