SPECIFICATIONS
Bit depth: USB/I2S 1bit, 16~32bit/Optical/Coaxial 1bit, 16~32bit
Bluetooth: Yes
Bluetooth specification: LDAC 24bit/96kHz (990kbps/660kbps/330kbps)/aptX-HD 24bit/48kHz_576kbps/aptx 16bit/44.1kHz_352kbps/SBC 16bit/44.1kHz_328kbps/AAC 16bit/44.1kHz_320kbps
Brand Name: S.M.S.L
Certification: CE,RoHS,pse
D/A Converter: 1*AK4191 2*AK4499EX
DSD Sampling Frequencies: 2.8224 MHz (DSD64),5.6448 MHz (DSD128),11.2896 MHz (DSD256),22.5792 MHz (DSD512)
Dimensions (W x H x D): 240*188*46mm
Dynamic range: XLR 133dB/RCA 128dB
Electrified: No
High-concerned chemical: none
Input: USB/Optical/Coaxial/I2S/Bluetooth/AES
Inputs: USB Type-B,Optical (SPDIF),Coaxial
Material: Metal
Model Number: SMSL D400EX
Origin: Mainland China
Output: RCA/XLR
Outputs: RCA,Balanced Out
PCM Sampling Frequencies: 44.1 kHz,48 kHz,88.2 kHz,96 kHz,176.4 kHz,192 kHz,352.8 kHz,384 kHz,705.6 kHz,768 kHz
PCM Word Length: 16-bit,24-bit,32-bit
Power Consumption: 6W
S.M.S.L Model: D400EX
SNR: 133dB
Sampling rate: USB/I2S PCM 44.1~768kHz/DSD 2.8224~22.5792MHz/Optical/Coaxial PCM 44.1~192kHz
Standby power: <0.5W
THD+N: 0.00006%(-124dB)/0.000053%(-125.5dB)(A-WTD)
Type: Desktop
USB Compatibility: Windows 7,Windows 8,Windows 8.1,Windows 10,osx
USB compatibility: Windows 7/8/8.1/10, Mac OSX/Linux
USB transmission: Asynchronization
🎵 SMSL D400EX Flagship DAC
Dual AK4499EX, -124dB Ultra-Low Distortion 🔥
The D400EX is a reference-grade pure DAC from SMSL, featuring the AK4191 + dual AK4499EX flagship DAC array in a dual-mono layout (one AK4499EX per channel). Powered by the 3rd-gen XMOS XU-316 interface with full MQA decoding and DSD512 support, combined with a self-developed clock purification circuit and 9 high-end dual op-amps, it delivers极致纯净 analog output for high-end audio systems.
✨ Key Features
🎛️ Flagship DAC Array, Dual-Mono Design：Features AK4191 + dual AK4499EX with one AK4499EX per channel. THD+N as low as 0.00006% (-124dB), dynamic range up to 133dB, and SNR of 133dB.
🚀 3rd-Gen XMOS Interface, Full Format Support：Equipped with XMOS XU-316, USB input supports PCM up to 32bit/768kHz and native DSD512, effortlessly handling master-quality audio files.
💎 Full MQA Decoding, Studio-Quality Sound：Supports full MQA and MQA-CD hardware decoding, unfolding Tidal streams or local MQA files to deliver original master recording quality.
📱 Bluetooth LDAC Wireless Input：Qualcomm premium Bluetooth chip with LDAC (24bit/96kHz), aptX/HD, AAC — near-master quality wirelessly.
🎛️ Self-Developed Clock Purification, Ultra-Low Jitter：Features 2nd PLL and the new CK-03 clock processing circuit, dramatically reducing jitter from SPDIF sources for precise soundstage imaging.
🔊 Audiophile Analog Stage, Clean Power：Includes 9 high-end dual op-amps + premium components, paired with multiple low-noise voltage regulators for a black background.
🖥️ Tempered Glass Full-Lamination IPS Display：Color IPS display with adjustable auto-dim (5-60s), reducing light pollution for immersive listening.
🔌 Full DSD over All Inputs：USB, optical, coaxial, AES, I2S all support DSD transmission; coaxial/optical also support DOP64, allowing DSD playback from CD transports.
📊 Specifications
Inputs：USB / Optical / Coaxial / I2S(HDMI) / Bluetooth / AES/EBU
Outputs：Balanced (XLR) / Unbalanced (RCA)
THD+N：0.00006% (-124dB)
Dynamic Range：Balanced 133dB / Unbalanced 128dB
SNR：133dB
USB Transmission：Asynchronous
USB Compatibility：Windows 7/8/8.1/10/11, macOS, Linux
USB/I2S Max Sampling Rate：PCM 44.1~768kHz (32bit) / DSD 2.8224~22.5792MHz (DSD512)
Optical/Coaxial Max Sampling Rate：PCM 44.1~192kHz (24bit)
Bluetooth Codecs：LDAC (24bit/96kHz, 990kbps) / aptX-HD / aptX / AAC / SBC
Power Consumption：6W
Standby Power：<0.5W
Dimensions：240 × 188 × 46 mm (W×H×D)
Weight：1.85kg
