{"product_id":"smsl-as400-hifi-dac-power-amplifier-bluetooth-phono-mqa","title":"SMSL AS400 Hi-Fi DAC Amplifier | Bluetooth, Phono, MQA","description":"\n\u003ch2\u003eSMSL AS400 Hi-Fi Integrated DAC Power Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSMSL AS400\u003c\/strong\u003e is a premium all-in-one Hi-Fi integrated amplifier that combines a high-resolution DAC, a powerful digital power amplifier, a dedicated headphone amp, and a built-in MM phono stage — all in a beautifully crafted CNC-machined aluminum chassis. Whether you're spinning vinyl, streaming wirelessly, or watching TV, the AS400 delivers exceptional audio fidelity for the most discerning listeners.\u003c\/p\u003e\n\n\u003ch3\u003eCore Technologies\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInfineon MA5332MS Digital Amplifier\u003c\/strong\u003e (Germany) — delivers 165W×2 at 4Ω with an ultra-low THD of just 0.003% for clean, powerful sound.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCirrus Logic CS43131 DAC\u003c\/strong\u003e (USA) — renowned for its high-resolution audio decoding performance with up to 107dB Signal-to-Noise Ratio.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJRC NJW1194A Volume Control Chip\u003c\/strong\u003e (Japan) — ensures precise, channel-balanced volume control at every listening level.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3rd-Gen XMOS Solution\u003c\/strong\u003e — supports PCM 32-bit\/768kHz and DSD256 for the highest-resolution digital audio formats.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull MQA Decoding\u003c\/strong\u003e — unfolds MQA files via USB, Optical, or Coaxial inputs, including MQA-CD playback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVersatile Connectivity — 7 Inputs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB\u003c\/strong\u003e (Type-A \u0026amp; Type-C) — hi-res computer audio playback up to PCM 768kHz \/ DSD256\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth 5.0\u003c\/strong\u003e with LDAC \u0026amp; aptX HD — wireless hi-res streaming from smartphones and tablets\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptical \u0026amp; Coaxial\u003c\/strong\u003e — for CD players, streaming devices, and non-ARC TVs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHDMI (ARC)\u003c\/strong\u003e — direct TV audio transmission for a clean home theater setup\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMM Phono Stage\u003c\/strong\u003e — built-in, ready for your turntable and vinyl collection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLine Input\u003c\/strong\u003e — for any additional analog source\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHeadphone Outputs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual headphone outputs\u003c\/strong\u003e: 4.4mm balanced + 6.35mm single-ended — drive a wide range of headphones with authority\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUser-Friendly Design\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCNC-machined aluminum chassis with anodized finish for a premium look and feel\u003c\/li\u003e\n  \u003cli\u003e8 selectable display colors with auto-dimming after 5 seconds\u003c\/li\u003e\n  \u003cli\u003eFull-function remote control with independent Bass\/Treble adjustment (±9dB) and 5 professional audio filters\u003c\/li\u003e\n  \u003cli\u003eRCA outputs for connecting to powered subwoofers or additional amplifiers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e165W × 2 @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.003%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSNR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e107dB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCM Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 32-bit \/ 768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDSD Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDSD64 – DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBluetooth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLDAC \/ aptX HD\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB-A, USB-C, Bluetooth, Optical, Coaxial, HDMI(ARC), Phono (MM), Line\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpeaker Terminals, RCA, 4.4mm Headphone, 6.35mm Headphone\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC-Machined Aluminum (Anodized)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Choose the SMSL AS400?\u003c\/h3\u003e\n\u003cp\u003eThe AS400 is engineered for audiophiles who demand flexibility without compromise. From vinyl enthusiasts to digital streaming devotees, this amplifier handles every source with finesse — making it the ultimate hub for a modern hi-fi system.\u003c\/p\u003e\n\n\u003cp\u003eFor more on high-resolution audio standards and digital audio technology, visit the \u003ca href=\"https:\/\/www.nist.gov\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Institute of Standards and Technology (NIST)\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Does the SMSL AS400 support high-resolution audio formats like DSD and MQA?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The SMSL AS400 supports PCM audio up to 32-bit\/768kHz and DSD up to DSD256. It also features full MQA decoding via its USB, Optical, and Coaxial inputs, including compatibility with MQA-CD playback, making it ideal for hi-res audio enthusiasts.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use the SMSL AS400 with my turntable?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The AS400 includes a built-in Moving Magnet (MM) phono stage, so you can connect a standard turntable with an MM cartridge directly — no external phono preamp needed.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What Bluetooth codecs does the SMSL AS400 support?\u003c\/h4\u003e\n\u003cp\u003eA: The AS400 supports Bluetooth 5.0 with LDAC (up to 990kbps) and aptX HD codecs, enabling high-resolution wireless streaming from compatible smartphones, tablets, and other Bluetooth audio sources.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many headphones can I connect at once?\u003c\/h4\u003e\n\u003cp\u003eA: The SMSL AS400 features dual headphone outputs — a 4.4mm balanced jack and a 6.35mm single-ended jack — allowing you to connect two headphones simultaneously or choose the output that best matches your headphones.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can the SMSL AS400 be used as part of a home theater setup?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The AS400 includes an HDMI (ARC) input for direct TV audio transmission, and also accepts audio from non-ARC TVs via its Optical or Coaxial inputs, making it an excellent choice for both dedicated hi-fi and home theater applications.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the SMSL AS400 support high-resolution audio formats like DSD and MQA?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The SMSL AS400 supports PCM audio up to 32-bit\/768kHz and DSD up to DSD256. It also features full MQA decoding via its USB, Optical, and Coaxial inputs, including compatibility with MQA-CD playback, making it ideal for hi-res audio enthusiasts.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use the SMSL AS400 with my turntable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. 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