{"product_id":"topping-la90-discrete-power-amplifier","title":"TOPPING LA90 Discrete NFCA Stereo \u0026 Mono Power Amplifier","description":"\u003cp\u003e\u003cstrong\u003eTOPPING LA90 Discrete Power Amplifier\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe TOPPING LA90 Discrete brings the magic of NFCA circuitry to your speakers. This new iteration of the LA90 features a cutting-edge discrete NFCA (Nested Feedback Composite Amplifier) power amplifier circuit built from individually optimized components – delivering greater power in stereo mode, cleaner amplification with an SNR of 143dB, and a wider dynamic range for superb sonic reproduction. Supporting both stereo and mono operation, it is the ideal high-performance foundation for demanding speaker systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiscrete NFCA Amplifier Circuit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInstead of relying on integrated circuits, the LA90 Discrete uses a newly developed discrete NFCA power amplifier circuit made of individual components optimized for audio performance. This design reduces distortion, improves linearity, and provides greater control over the audio signal, achieving an ultra-low distortion of less than 0.0001% for a clean, natural, dark-background sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStereo \u0026amp; Mono Operation Modes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe LA90 Discrete offers both stereo and mono modes for maximum system flexibility. In stereo mode it delivers 120W×2 @4Ω and 66W×2 @8Ω; in mono mode it provides an impressive 180W @4Ω and 220W @8Ω – easily powering even the hungriest speakers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-Step Gain Settings\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFine-tune your audio experience with 2-step gain settings. In stereo mode, gain levels are +9.4dB and +19.4dB; in mono mode, +15.4dB and +25.4dB – letting you match the amplifier precisely to your preamplifier or DAC output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThree XLR\/TRS Balanced Inputs with Volume\/Bypass Modes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThree input ports accept both XLR and TRS balanced connections, so you can connect up to three source setups and switch between them easily. Selectable input modes – with or without volume control (bypass) – let you configure the LA90 Discrete as a standalone powered amplifier or as part of a larger system with external volume management.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-Low Distortion \u0026amp; 143dB SNR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe precisely designed NFCA circuit outputs clean power with best-in-class performance: distortion below 0.0001% even under heavy 4Ω and 8Ω loads, and a high SNR of 143dB – ensuring the darkest background and vivid, accurate reproduction of your music.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCNC Machined All-Aluminum Enclosure\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe high-precision CNC machined all-aluminum enclosure looks sleek and provides reliable heat dissipation through passive cooling on both sides. The LA90 Discrete stays cool and performs optimally during long listening sessions, with a refined finish in Black or Silver.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e12V Trigger for Seamless Integration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 12V trigger input and output interface allows easy integration with other devices – switch multiple components on and off simultaneously without handling each one individually.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible System Configurations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfigure the LA90 Discrete as a combined machine with its own volume control, or as a pure power amplifier without volume for dual-mono setups. For a complete headphone + speaker system, pair it with the A90 Discrete, which adds headphone amplification, preamp duties, remote control, and input expansion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Circuit:\u003c\/strong\u003e Discrete NFCA (Nested Feedback Composite Amplifier)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Stereo):\u003c\/strong\u003e 120W×2 @4Ω; 66W×2 @8Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Mono):\u003c\/strong\u003e 180W @4Ω; 220W @8Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain (Stereo):\u003c\/strong\u003e +9.4dB \/ +19.4dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain (Mono):\u003c\/strong\u003e +15.4dB \/ +25.4dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 3× XLR\/TRS balanced\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Modes:\u003c\/strong\u003e With volume control \/ bypass (preamp bypass)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e \u0026lt;0.0001%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e 143dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e High-precision CNC machined all-aluminum, passive cooling on both sides\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrigger:\u003c\/strong\u003e 12V trigger input and output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Black, Silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTOPPING LA90 Discrete amplifier\u003c\/li\u003e\n\u003cli\u003eAC to DC power adapter\u003c\/li\u003e\n\u003cli\u003eAC cable\u003c\/li\u003e\n\u003cli\u003eJumper cable\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003cli\u003eWarranty card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-discrete-power-amplifier-hero.jpg?v=1787201470\" alt=\"topping la90 discrete power amplifier hero\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-discrete-nfca-amplifier-banner.jpg?v=1787201470\" alt=\"topping la90 discrete nfca amplifier banner\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-discrete-nfca-amplifier-circuit.jpg?v=1787201470\" alt=\"topping la90 discrete nfca amplifier circuit\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-stereo-mono-modes.jpg?v=1787201471\" alt=\"topping la90 stereo mono 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src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-performance-measurements.jpg?v=1787201470\" alt=\"topping la90 performance measurements\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-aluminum-enclosure.jpg?v=1787201470\" alt=\"topping la90 aluminum enclosure\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-passive-cooling.jpg?v=1787201471\" alt=\"topping la90 passive cooling\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-12v-trigger.jpg?v=1787201470\" alt=\"topping la90 12v trigger\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-system-configuration.jpg?v=1787201470\" alt=\"topping la90 system configuration\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-dual-mono-setup.jpg?v=1787201471\" alt=\"topping la90 dual mono setup\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-a90-discrete-pairing.jpg?v=1787201470\" alt=\"topping la90 a90 discrete pairing\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-signal-path-diagram.jpg?v=1787201470\" alt=\"topping la90 signal path diagram\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-measurement-chart.jpg?v=1787201470\" alt=\"topping la90 measurement chart\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-technical-details.jpg?v=1787201470\" alt=\"topping la90 technical details\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-technical-specifications.jpg?v=1787201470\" alt=\"topping la90 technical specifications\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-specifications-sheet-01.jpg?v=1787201470\" alt=\"topping la90 specifications sheet 01\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-specifications-sheet-02.jpg?v=1787201470\" alt=\"topping la90 specifications sheet 02\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-specifications-sheet-03.jpg?v=1787201470\" alt=\"topping la90 specifications sheet 03\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-specifications-sheet-04.jpg?v=1787201470\" alt=\"topping la90 specifications sheet 04\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-in-the-box.jpg?v=1787201470\" alt=\"topping la90 in the box\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-accessories.jpg?v=1787201470\" alt=\"topping la90 accessories\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-specifications-sheet-05.jpg?v=1787201470\" alt=\"topping la90 specifications sheet 05\"\u003e\u003c\/p\u003e","brand":"TOPPING","offers":[{"title":"Black","offer_id":48849160143040,"sku":"10015863","price":6389.92,"currency_code":"HKD","in_stock":true},{"title":"Silver","offer_id":48849161781440,"sku":"10015364","price":6389.92,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-la90-discrete-power-amplifier-rear-panel-view.jpg?v=1787201475","url":"https:\/\/hifichic.com\/products\/topping-la90-discrete-power-amplifier","provider":"HIFICHIC","version":"1.0","type":"link"}