{"product_id":"topping-a90-discrete-balanced-headphone-amplifier-pre-amplifier","title":"TOPPING A90 Discrete Balanced Headphone Amplifier \u0026 Pre-amplifier","description":"\u003cp\u003eIntroducing the Topping A90 Discrete, a powerhouse of a headphone amplifier that boasts a fully discrete NFCA (Nested Feedback Composite Amplifier) module with four built-in NFCA-Discrete modules, each consisting of 39 transistors for a fully balanced structure. This redesign unleashes remarkable power, producing 9800mW of clean output at 16Ω. Paired with the EXT90 extender for additional connections, it's a high-end desktop audio dream.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Benchmark Amplifier: \u003c\/strong\u003eThe Topping A90, fondly known as \"Mr. Clean,\" has earned nicknames like \"The Giant Killer\" and \"The Best Amp Ever.\" It sets the standard for sub-$1,000 solid-state amplifiers with its clean and powerful balanced output. The A90D takes this legacy further by embracing fully discrete components. Four discrete NFCA modules with 39 transistors each form the foundation for a fully balanced amplifier architecture, ensuring unrivaled distortion and noise performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnhancements Over A90: \u003c\/strong\u003eThe A90D goes beyond the A90 with quality-of-life improvements, including an R2R volume relay, a remote control, a ground loop noise terminator switch, a 12V trigger interface, a redesigned UI, volume memorization, and improved specs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Headphone Compatibility: \u003c\/strong\u003eThe A90D effortlessly handles planar magnetic, electrostatic, dynamic drivers, and IEMs thanks to its high output voltage, current capacity, and low output impedance. Enjoy high power for full-sized headphones or delicately drive sensitive IEMs without audible noise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGround Loop Noise Eliminator: \u003c\/strong\u003eThe A90D features a GND\/LIFT switch to tackle ground loop noise, eliminating buzzing or humming sounds that can disrupt your audio experience when multiple equipment pieces are used together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePre-Amp Mode: \u003c\/strong\u003eSwitch to pre-amp mode to connect a power amplifier for bookshelf, desktop, or floor speakers. It can also be connected to the D90SE\/LE DAC in pre-amp mode, creating a high-end sound system with the convenience of remote control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e12V Trigger Interface: \u003c\/strong\u003eThe A90D offers a 12V trigger interface, enabling synchronized power-on\/off with other devices equipped with a 12V trigger interface, such as the TOPPING LA90.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eR2R Volume Control: \u003c\/strong\u003eUtilizing an R2R volume control composed of relays and resistor networks, the A90D provides precise control, longevity, and complete channel balance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVolume Memorization: \u003c\/strong\u003eThe A90D can memorize output volume settings for pre-amp, headphone amp, and PRE+HPA modes, automatically restoring the last volume used for future sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBalanced \u0026amp; Single-Ended Headphone Connections: \u003c\/strong\u003eThe A90 Discrete features three headphone output ports, accommodating both single-ended and balanced connections (4-pin XLR and 4.4mm Balanced, along with a 6.35mm single-ended connection). Its high output voltage, current, and low output impedance make it compatible with a wide range of headphones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-Clean Performance with Low Distortion: \u003c\/strong\u003eThis highly powerful headphone amplifier maintains ultra-low distortion even at peak loads. At 6700mW and 32Ω, it achieves \u0026lt;0.1% THD+N, while at 950mW and 300Ω, it boasts \u0026lt;0.00003% distortion, ensuring pristine audio reproduction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-Level Gain Settings: \u003c\/strong\u003eThe A90 Discrete offers two gain settings for versatility: low gain (0dB for single-ended and 6dB for balanced) suits high-sensitivity headphones and IEMs, while high gain (9.5dB for single-ended and 15.5dB for balanced) drives power-hungry full-sized headphones.\u003c\/p\u003e\n\u003cp\u003eDiscover a new dimension of audio excellence with the Topping A90 Discrete, where power, precision, and performance unite.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/fully-discrete-balanced-headphone-amp-a90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-a90-discrete-features.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-uses-fully-discrete-nfca-to-create-wonderful-amp.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-a90-xlr-balanced-se-jacks.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-a90-amp-compatible-with-difference-headphones.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-discrete-amp-can-maintain-ultra-low-distortion-output-under-high-power-load.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-discrete-has-two-gain-options-to-cover-wide-varitey-headphones.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-discrete-amp-adds-gnd-lift-switch-to-solve-ground-loop-noise.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-serves-as-headphone-amp-also-a-preamp.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-work-with-ext90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-has-an-auto-power-onoff-feature.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-headphone-amp-customized-volume-control.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/safe-volume-setting-for-a90-amp.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-can-memorize-volume-settings-of-all-inputs.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-comes-with-a-remote-controller.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-amp-input-output-jacks.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-connect-to-d90se-d90le-dac.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-works-as-preamp-with-la90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/dimension-of-a90-amp.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-amp-specifications.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/packing-list-of-a90-amp.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/topping-a90-discrete-balanced-headphone-amp-for-pc-small-amplifier-for-speakers-hifichic.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/fft-spectrum-of-topping-a90-showing-low-distortion-.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/snr-rca-ratio-of-a90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/snr-rac-xlr-ratio-of-a90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/dnr-rca-ratio-of-a90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-thd-noise-vs-power-ratio.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/thd-noise-vs-power-ratio-of-a90.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/thd-noise-ratio-of-a90_1.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/a90-thd-noise-ratio_2.jpg\" alt=\"\" style=\"display:block;margin:20px auto;max-width:100%;width:100%;height:auto;\"\u003e","brand":"TOPPING","offers":[{"title":"Black","offer_id":48702457577664,"sku":"10012130-Black","price":4790.44,"currency_code":"HKD","in_stock":true},{"title":"Silver","offer_id":48702457610432,"sku":"10012130-Silver","price":4790.44,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/01_topping-a90-discrete-balanced-headphone-amplifier-powered-amp-for-speakers-hifichic_1.png?v=1785712498","url":"https:\/\/hifichic.com\/products\/topping-a90-discrete-balanced-headphone-amplifier-pre-amplifier","provider":"HIFICHIC","version":"1.0","type":"link"}