{"product_id":"smsl-pa400-gallium-nitride-gan-power-amplifier-with-400w-output-balanced-xlr-and-built-in-power-supply","title":"SMSL PA400 Digital Power Amplifier with Infineon MA5332, Tone Control, and Built-In Power Supply","description":"\u003cp\u003e\u003cstrong\u003eHigh-Efficiency Class D Power with Tone Control\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe SMSL PA400 is a high-output Gallium Nitride (GaN) power amplifier that combines Infineon's cutting-edge GaN transistor technology with a 1 MHz ultra-high switching frequency to deliver up to 165 watts per channel of clean, dynamic power. With fully-balanced XLR inputs, a built-in high-performance power supply, and comprehensive bass and treble tone controls, the PA400 drives even the most demanding floorstanding speakers with effortless authority, vanishingly low distortion, and a noise floor that disappears into absolute silence.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInfineon GaN Technology with 1 MHz Switching\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe PA400 is built around Infineon's latest-generation Gallium Nitride power transistors, which switch up to four times faster than conventional silicon devices. This 1 MHz switching frequency dramatically reduces dead time, eliminates crossover distortion artifacts, and enables the amplifier to track transient signals with razor-sharp precision. The audible result is tighter bass, more articulate midrange detail, and airy, extended treble free from the grain and haze that plague lesser Class D designs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e165W x 2 of Clean Class D Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith 400 watts per channel on tap, the PA400 effortlessly drives power-hungry floorstanding speakers, large bookshelf monitors, and low-sensitivity audiophile designs that would challenge lesser amplifiers. Headroom is abundant — dynamic peaks explode with impact while quiet passages retain their nuance and micro-detail.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFully-Balanced XLR Input Stage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTrue differential XLR inputs reject common-mode noise and ground-loop hum at the point of entry, preserving the full signal-to-noise ratio of your source components. Combined with high-quality RCA inputs for single-ended sources, the PA400 integrates seamlessly into both professional studio environments and high-end consumer audio systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuilt-In High-Performance Power Supply\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike many power amplifiers that require bulky external power bricks, the PA400 integrates a substantial internal power supply designed specifically for the dynamic current demands of high-output amplification. This keeps your rack clean while ensuring the amplifier has instant access to the energy reserves required for explosive transients and deep bass passages.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBass and Treble Tone Controls\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIndependent bass and treble adjustment lets you fine-tune the tonal balance to match your room acoustics, speaker characteristics, and personal preference. Bypass them entirely for a pure direct signal path, or engage them for subtle corrections.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecision Volume Control and OLED Display\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA high-resolution digital volume control provides precise, repeatable level adjustment with perfect channel tracking at any volume setting. The bright OLED display shows input selection, volume level, and operating status at a glance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Chip:\u003c\/strong\u003e Infineon MA5332 Class D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e 0.004%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e 100 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e 72 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e RCA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 165W x 2 @ 4 Ohm \/ 85W x 2 @ 8 Ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e High Gain 315mV\/20kOhm \/ Low Gain 580mV\/20kOhm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e NJU7391A with Surround Sound and Tone Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEQ:\u003c\/strong\u003e Bass and Treble Adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 40 W (Normal Volume)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Built-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 191.6 x 41.6 x 185 mm (W x H x D)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.26 kg (2.77 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSMSL PA400 Gallium Nitride Power Amplifier\u003c\/li\u003e\n\u003cli\u003eRemote Control\u003c\/li\u003e\n\u003cli\u003ePower Cable\u003c\/li\u003e\n\u003cli\u003eUser Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part01.jpg\" alt=\"SMSL PA400 GaN Power Amplifier Overview\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part02.jpg\" alt=\"SMSL PA400 GaN Technology and Features\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part03.jpg\" alt=\"SMSL PA400 Design and Build Details\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part04.jpg\" alt=\"SMSL PA400 Connectivity and Inputs\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part05.jpg\" alt=\"SMSL PA400 Specifications Part 1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part06.jpg\" alt=\"SMSL PA400 Specifications Part 2\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part07.jpg\" alt=\"SMSL PA400 Specifications Part 3\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part08.jpg\" alt=\"SMSL PA400 Specifications Part 4\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part09.jpg\" alt=\"SMSL PA400 Specifications Part 5\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part10.jpg\" alt=\"SMSL PA400 Specifications Part 6\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part11.jpg\" alt=\"SMSL PA400 Specifications Part 7\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part12.jpg\" alt=\"SMSL PA400 Specifications Part 8\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part13.jpg\" alt=\"SMSL PA400 Specifications Part 9\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part14.jpg\" alt=\"SMSL PA400 Specifications Part 10\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part15.jpg\" alt=\"SMSL PA400 Specifications Part 11\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-amplifier-features-part16.jpg\" alt=\"SMSL PA400 Package Contents\"\u003e\u003c\/p\u003e\n","brand":"SMSL","offers":[{"title":"Default Title","offer_id":48720540991680,"sku":"10017008","price":4438.55,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-pa400-gan-power-amplifier-front-view.webp?v=1785918957","url":"https:\/\/hifichic.com\/products\/smsl-pa400-gallium-nitride-gan-power-amplifier-with-400w-output-balanced-xlr-and-built-in-power-supply","provider":"HIFICHIC","version":"1.0","type":"link"}