{"product_id":"smsl-al400","title":"SMSL AL400 Integrated Amplifier | TPA3255 Class D + CS43131 DAC | HDMI eARC \u0026 MM\/MC Phono","description":"\u003cdiv class=\"description--wrap--LscZ0He\" id=\"nav-description\"\u003e\n\u003cdiv class=\"extend--wrap--yXwoDbO\"\u003e\n\u003cdiv class=\"extend--content--VuIQZia\"\u003e\n\u003cdiv id=\"product-description\" data-spm=\"1000023\" class=\"description--product-description--Mjtql28\" data-pl=\"product-description\"\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"product-description\" class=\"product-description\"\u003e\n\u003cp align=\"center\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/A8e460b1f0e0741928fb16976b51aa5b6z.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Ad3ddd23dc0a0437a86fcdebc12f42892i.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Ab744197acbe94c488f1cef6a1122ed84Q.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Acc51fd35d4d94f08b30d51a1ef0c5ef2i.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/A686e02affecd464d965e16a4e26c1cc5W.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Ac82d18a40a9d4cca9a72ad1f5999bbdae.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 dir=\"auto\"\u003eS.M.S.L AL400 Integrated Amplifier\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe S.M.S.L AL400 is a compact all-in-one integrated amplifier that combines high-power Class D amplification, a high-resolution DAC, MM\/MC phono stage, HDMI eARC, and Bluetooth streaming in a single chassis. Designed for versatile home audio systems, it delivers clean power, flexible connectivity, and practical features for both stereo and 2.1 setups.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eTPA3255 Class D Amplification\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eAt the core of the AL400 is the Texas Instruments TPA3255 Class D amplifier chip, delivering 165 W per channel into 4 Ω and 85 W per channel into 8 Ω with a THD+N of 0.003%. This efficient design provides strong drive capability for a wide range of speakers while maintaining low distortion and high efficiency.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eCirrus Logic CS43131 DAC and XMOS Interface\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eDigital conversion is handled by the Cirrus Logic CS43131 DAC paired with a third-generation XMOS XU-316 USB processor. The AL400 supports PCM up to 32-bit\/768 kHz and native DSD up to DSD256 via USB, along with full MQA and MQA-CD decoding on USB, optical, and coaxial inputs.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eHDMI eARC Connectivity\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eBuilt-in HDMI eARC allows direct connection to televisions for high-quality audio return with automatic volume synchronization. This makes the AL400 an effective central hub for both music and TV sound without the need for additional converters.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eMM\/MC Phono Stage\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eA low-noise built-in phono preamplifier supports both Moving Magnet (MM) and Moving Coil (MC) cartridges. Users can connect a turntable directly, eliminating the need for an external phono stage.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eHigh-Resolution Bluetooth Streaming\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eEquipped with a Qualcomm Bluetooth chipset, the AL400 supports LDAC, aptX HD, aptX Adaptive, AAC, and SBC. This enables convenient high-resolution wireless playback from smartphones, tablets, and computers.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eParametric EQ and Subwoofer Control\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eA three-band parametric equalizer allows independent adjustment of frequency, gain, and Q-factor for precise sound tailoring. The dedicated subwoofer output includes adjustable volume, four selectable low-pass crossover points, and 0°\/180° phase selection for seamless 2.1 system integration.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eROHM Volume Control and Premium Construction\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eVolume control is managed by the ROHM BD37524FS-E electronic volume chip for accurate adjustment and low distortion. The chassis features a CNC-machined aluminum panel with anodized finish, offering solid build quality and a clean modern appearance.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eComprehensive Connectivity\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe AL400 provides a versatile set of inputs and outputs:\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDigital: USB-C, Optical, Coaxial, HDMI eARC, Bluetooth\u003c\/li\u003e\n\u003cli\u003eAnalog: Stereo RCA line input, MM\/MC Phono input with ground terminal\u003c\/li\u003e\n\u003cli\u003eOutputs: Speaker terminals, Subwoofer RCA output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eAbout SMSL\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eFoshan ShuangMuSanLin Electronics Co., Ltd. (SMSL) is an established manufacturer specializing in high-fidelity desktop audio products. Focusing on digital-to-analog converters, amplifiers, and related components, SMSL has built a global reputation for combining strong measured performance, practical features, and clean industrial design across accessible price points.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eAmplifier Chip: Texas Instruments TPA3255\u003cbr\u003eDAC Chip: Cirrus Logic CS43131\u003cbr\u003eUSB Interface: XMOS XU-316\u003cbr\u003eOutput Power: 165 W × 2 (4 Ω), 85 W × 2 (8 Ω)\u003cbr\u003eTHD+N: 0.003%\u003cbr\u003eSNR: 101 dB\u003cbr\u003eChannel Separation: 100 dB\u003cbr\u003eInputs: RCA \/ USB \/ Optical \/ Coaxial \/ Phono (MM\/MC) \/ HDMI eARC \/ Bluetooth\u003cbr\u003eOutputs: Speaker terminals \/ Subwoofer RCA\u003cbr\u003eUSB PCM: 44.1–768 kHz (16–32 bit)\u003cbr\u003eUSB DSD: DSD64–DSD256\u003cbr\u003eOptical\/Coaxial PCM: 44.1–192 kHz (16–24 bit)\u003cbr\u003eOptical\/Coaxial DSD: DSD64 (DoP)\u003cbr\u003eMQA Decoding: USB \/ Optical \/ Coaxial\u003cbr\u003eBluetooth: LDAC, aptX HD, aptX Adaptive, AAC, SBC\u003cbr\u003ePower Consumption: 40 W\u003cbr\u003eDimensions: 254 × 45 × 210 mm\u003cbr\u003eWeight: 1.7 kg\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eQ\u0026amp;A\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat amplifier chip does the SMSL AL400 use?\u003c\/strong\u003e\u003cbr\u003eIt uses the Texas Instruments TPA3255 Class D amplifier chip.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat DAC chip is inside the AL400?\u003c\/strong\u003e\u003cbr\u003eIt features the Cirrus Logic CS43131 DAC paired with an XMOS XU-316 USB interface.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eDoes the AL400 support HDMI eARC?\u003c\/strong\u003e\u003cbr\u003eYes. It includes a built-in HDMI eARC input for direct connection to televisions.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eCan I connect a turntable directly?\u003c\/strong\u003e\u003cbr\u003eYes. The AL400 has a built-in low-noise phono stage that supports both MM and MC cartridges.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat is the maximum sampling rate supported via USB?\u003c\/strong\u003e\u003cbr\u003ePCM up to 32-bit\/768 kHz and native DSD up to DSD256.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eDoes it support full MQA decoding?\u003c\/strong\u003e\u003cbr\u003eYes. Full MQA and MQA-CD decoding is available via USB, optical, and coaxial inputs.\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SMSL","offers":[{"title":"SMSL-AL400-Silver","offer_id":67972354965808,"sku":"SMSL-AL400-Silver","price":383.49,"currency_code":"USD","in_stock":true},{"title":"SMSL-AL400-Black","offer_id":67972354998576,"sku":"SMSL-AL400-Black","price":383.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/6712\/8880\/files\/Aff2f96d2752e42b1b34481429fe9ac33a.avif?v=1791447094","url":"https:\/\/aehifi.com\/products\/smsl-al400","provider":"AEHIFI SHOP","version":"1.0","type":"link"}