{"product_id":"smsl-do400","title":"SMSL DO400 Fully Balanced Audio DAC \u0026 Headphone Amplifier | ES9039MSPRO MQA-CD Decoder","description":"\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sfb3a0d9b76dc4095aafd6f123c33e9652.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbecec363440f49a08c8136fbaff7d9f70.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S693f31e6468c40d4a5322723046d6188N.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S720ce7eea72749399bc5ea0c85ae9289W.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf66fe648ac4a4956b20ac9c06e338cd9c.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S51f4369a05474ac39c7077e3fb4bd393O.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S32fc570bf87e43669662586400ccb07eh.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Seb1d2dfdc75c4cd39803b8b347b6004dN.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7dc0faf64b2143b5b5e4ede93aa1b4e4k.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sff1fe2e1f271448f9c68ed3fb96aacd2B.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sad7d491c1ca541b7b6ddce4acb15915fI.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9989979942cc4199853314ecef17a35aY.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbbec65f327fc452b9bf8561259aea09dU.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sa61f3cce3e824501b6e5a539a1a4eacal.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sed7ecc52eacb4816ba171abbba6d36ffm.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eS.M.S.L DO400 Fully Balanced Audio DAC and Headphone Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eS.M.S.L DO400\u003c\/strong\u003e represents the pinnacle of modern desktop audio engineering, combining a state-of-the-art flagship \u003cstrong\u003eESS DAC\u003c\/strong\u003e chip with a powerful built-in headphone amplifier. Designed for discerning audiophiles and high-end setups, it delivers master-grade resolution, ultra-low distortion, and massive driving power to bring out the absolute best in any headphones or speakers.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"citation-317 citation-end-317\"\u003eFlagship ES9039MSPRO DAC Architecture\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-317 citation-end-317\"\u003e\u003cspan class=\"citation-316 citation-end-316\"\u003eAt the heart of the \u003cstrong\u003eDO400\u003c\/strong\u003e is ESS Technology’s premier flagship ES9039MSPRO digital-to-analog conversion chip, featuring built-in MQA hardware decoding.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e This advanced architecture drastically reduces noise interference and jitter, resulting in an exceptionally pure, transparent, and lifelike audio reproduction with pinpoint imaging and rich textural detail.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eMassive Headphone Driving Power with Versatile Outputs\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-314 citation-end-314\"\u003eEquipped with a high-performance 4-way fully balanced headphone amplifier circuit, the DO400 delivers an impressive output power of up to 6000mW into 16 ohms.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e It features a comprehensive array of headphone jacks—including 4.4mm balanced, 6.35mm single-ended, and 4-pin XLR balanced outputs—alongside professional XLR and RCA line outputs to easily drive everything from sensitive IEMs to demanding planar magnetic headphones.\u003c\/p\u003e\n\u003ch3\u003eHigh-Resolution Audio and Complete MQA Decoding\u003c\/h3\u003e\n\u003cp\u003eThe DO400 provides comprehensive hardware support for the industry's most demanding digital formats. It natively decodes PCM audio up to 32-bit\/768kHz and Direct Stream Digital up to DSD512 via USB and I2S inputs. Furthermore, full MQA and MQA-CD decoding capabilities allow listeners to stream or play back studio master recordings precisely as the artist intended.\u003c\/p\u003e\n\u003ch3\u003eHigh-Performance Qualcomm Bluetooth Connectivity\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-313 citation-end-313\"\u003eEquipped with an advanced Qualcomm Bluetooth chipset supporting Bluetooth 5.1, the DO400 offers high-definition wireless streaming protocols including LDAC (24-bit\/96kHz), aptX HD, aptX, AAC, and SBC.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e This ensures users can enjoy seamless, high-resolution wireless audio from smartphones, tablets, or laptops without sacrificing sonic fidelity.\u003c\/p\u003e\n\u003ch3\u003ePremium CNC Aluminum Construction\u003c\/h3\u003e\n\u003cp\u003eThe chassis is precision-milled from a solid block of high-grade aluminum using advanced CNC machining and features a full-laminated tempered glass color IPS display. This robust enclosure not only offers a sleek, modern aesthetic but also provides exceptional structural rigidity and superior shielding against external electromagnetic interference.\u003c\/p\u003e\n\u003ch3\u003eComprehensive Digital and Analog Connectivity\u003c\/h3\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-126\"\u003eDesigned as the ultimate command center for desktop audio, the DO400 offers a full array of inputs and outputs to integrate effortlessly into any home audio or headphone system:\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-126\"\u003e\u003cspan class=\"citation-312 citation-end-312\"\u003eInputs: USB, Optical, Coaxial, Bluetooth, AES\/EBU, and I2S.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-126\"\u003eOutputs: Balanced XLR line-out, Unbalanced RCA line-out, 4.4mm balanced headphone jack, 6.35mm single-ended headphone jack, and 4-pin XLR balanced headphone jack. \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"citation-310 citation-end-310\"\u003eAbout SMSL\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-310 citation-end-310\"\u003eFoshan ShuangMuSanLin Electronics Co., Ltd. (SMSL) is an established global manufacturer specializing in high-fidelity desktop audio. \u003cspan class=\"citation-309 citation-end-309\"\u003eKnown for digital-to-analog converters, balanced headphone amplifiers, and power amplifiers, SMSL has built a worldwide reputation for combining rigorous bench performance, clean industrial design, and exceptional value across various price tiers.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003e\u003cspan class=\"citation-308 citation-end-308\"\u003eInput: USB \/ Optical \/ Coaxial \/ Bluetooth \/ AES \/ I2S\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003e\u003cspan class=\"citation-307 citation-end-307\"\u003eLine Output: XLR \/ RCA\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003e\u003cspan class=\"citation-306 citation-end-306\"\u003eHeadphone Output: 4.4mm balanced \/ 6.35mm single-ended \/ 4-pin XLR balanced\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003e\u003cspan class=\"citation-305 citation-end-305\"\u003eHeadphone Output Power: 6000mW x2 (16Ω) \/ 3000mW x2 (32Ω)\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003eTHD+N: 0.00005% (-123dB)\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003e\u003cspan class=\"citation-304 citation-end-304\"\u003eBluetooth Support: LDAC, aptX HD, aptX, SBC, AAC\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003eUSB Sampling Rate: PCM up to 32-bit\/768kHz, DSD up to DSD512\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003eDisplay: Tempered glass full-laminated color IPS screen \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003ch3\u003eQ\u0026amp;A\u003c\/h3\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-298 citation-end-298\"\u003e\u003cstrong\u003eWhat DAC chip does the SMSL DO400 use?\u003c\/strong\u003e\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003eIt uses flagship ESS Technology ES9039MSPRO DAC chip with built-in MQA decoding.\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-297 citation-end-297\"\u003e\u003cstrong\u003eWhat is the headphone output power of the DO400?\u003c\/strong\u003e\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-296 citation-end-296\"\u003eIt delivers up to 6000mW per channel into 16 ohms (3000mW into 32 ohms).\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cstrong\u003eWhat headphone jacks are available on the unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-295 citation-end-295\"\u003eIt features 4.4mm balanced, 6.35mm single-ended, and 4-pin XLR balanced headphone outputs.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-294 citation-end-294\"\u003e\u003cstrong\u003eDoes the DO400 support high-definition Bluetooth streaming?\u003c\/strong\u003e\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-293 citation-end-293\"\u003eYes, it features a high-end Qualcomm Bluetooth chip supporting LDAC, aptX HD, aptX, AAC, and SBC.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cstrong\u003eWhat are the maximum sampling rates supported via USB?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003cspan class=\"citation-292 citation-end-292\"\u003eIt supports PCM up to 32-bit\/768kHz and native DSD up to DSD512.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-132\"\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-130\"\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-126\"\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-125\"\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_fea7d4b4efc6f1ec-124\"\u003e\u003c\/p\u003e","brand":"SMSL","offers":[{"title":"SMSL-DO400-Black","offer_id":67787681923376,"sku":"SMSL-DO400-Black","price":599.0,"currency_code":"USD","in_stock":true},{"title":"SMSL-DO400-Silver","offer_id":67787681956144,"sku":"SMSL-DO400-Silver","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/6712\/8880\/files\/S010d8c798c174ee1a6d012a1dce13328J_jpg_960x960q75_jpg.avif?v=1789456267","url":"https:\/\/aehifi.com\/products\/smsl-do400","provider":"AEHIFI SHOP","version":"1.0","type":"link"}