{"product_id":"smsl-d400-mk2","title":"SMSL D400 MK2 Flagship DAC | AK4191 + AK4499EX","description":"\u003cp\u003eThe \u003cstrong\u003eSMSL D400 MK2\u003c\/strong\u003e is a flagship-grade desktop DAC that combines the latest \u003cstrong\u003eAK4191 + AK4499EX\u003c\/strong\u003e dual-chip architecture with \u003cstrong\u003eMQA full decoding\u003c\/strong\u003e, the industrial-grade \u003cstrong\u003eXMOS XU316\u003c\/strong\u003e USB processor, and \u003cstrong\u003e5 high-end op-amps\u003c\/strong\u003e for an uncompromising digital-to-analog conversion experience. With a full suite of inputs, remote control, and a refined form factor, the D400 MK2 is engineered for the serious audiophile.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eAK4191 + AK4499EX\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eMQA Full Decode\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eXMOS XU316\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003e5 High-End Op-Amps\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003ePCM 768kHz\/32bit\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eDSD512 Native\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eI2S \/ USB \/ Optical \/ Coaxial \/ AES\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eRemote Control Included\u003c\/span\u003e \u003cspan style=\"display: inline-block; background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 4px 10px; margin: 3px; font-size: 13px;\"\u003eBlack \/ Silver\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAK4191 + AK4499EX Dual-Chip Architecture — Flagship DAC Performance\u003c\/strong\u003e\u003cbr\u003eThe D400 MK2 employs the latest \u003cstrong\u003eAK4191 + AK4499EX\u003c\/strong\u003e combination from Asahi Kasei Microelectronics — a cutting-edge delta-sigma modulator paired with a current-output DAC — delivering exceptional dynamic range, ultra-low noise, and true flagship-level analog output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMQA Full Decoding — Studio Master Quality\u003c\/strong\u003e\u003cbr\u003eWith \u003cstrong\u003eMQA Full Decoder\u003c\/strong\u003e support, the D400 MK2 unfolds MQA files to their full studio-quality resolution, allowing you to hear exactly what the artist and recording engineer intended — directly from your streaming service or digital library.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eXMOS XU316 USB Processor — Industrial-Grade Digital Interface\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003eXMOS XU316\u003c\/strong\u003e USB audio processor provides a rock-solid, low-jitter digital connection supporting up to \u003cstrong\u003ePCM 768kHz\/32bit and DSD512 (Native)\u003c\/strong\u003e via USB. Its industrial-grade architecture ensures bit-perfect transmission from your source device to the DAC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5 High-End Op-Amps — Premium Analog Stage\u003c\/strong\u003e\u003cbr\u003eThe analog output stage is built around \u003cstrong\u003e5 carefully selected high-end op-amps\u003c\/strong\u003e, delivering a clean, low-distortion signal path from the DAC chips to your amplifier or headphone stage. This multi-op-amp topology allows for optimized buffering and filtering at every stage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFull Input Suite — I2S, USB, Optical, Coaxial, AES\u003c\/strong\u003e\u003cbr\u003eThe D400 MK2 offers a comprehensive set of digital inputs including \u003cstrong\u003eI2S (HDMI), USB, Optical, Coaxial, and AES\/EBU\u003c\/strong\u003e, ensuring compatibility with virtually any source — from a desktop PC to a dedicated network streamer or CD transport.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRemote Control Included — Effortless Operation\u003c\/strong\u003e\u003cbr\u003eThe included \u003cstrong\u003einfrared remote control\u003c\/strong\u003e gives you full command over input selection, volume (when used with a compatible preamplifier mode), and settings — keeping your listening sessions uninterrupted.\u003c\/p\u003e\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cp\u003eSMSL D400 MK2 × 1 \/ Remote Control × 1 \/ Power Adapter × 1 \/ USB Cable × 1 \/ Quick Start Guide × 1\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; height: 215.569px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: rgb(245, 245, 245); height: 19.5972px;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003e\u003cstrong\u003eDAC Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003eAK4191 + AK4499EX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003e\u003cstrong\u003eUSB Processor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003eXMOS XU316\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: rgb(245, 245, 245); height: 19.5972px;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003e\u003cstrong\u003eMQA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003eFull Decoder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003e\u003cstrong\u003eUSB PCM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003eUp to 768kHz \/ 32bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: rgb(245, 245, 245); height: 19.5972px;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003e\u003cstrong\u003eUSB DSD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003eDSD512 (Native)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid rgb(221, 221, 221); height: 19.5972px;\"\u003e\u003cstrong\u003eOp-Amps\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; 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