{"product_id":"topping-a90-discrete-fully-dirscrete-balanced-headphone-amplifier","title":"TOPPING A90 Discrete Fully Dirscrete Balanced Headphone Amplifier","description":"\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003ch1 data-pl=\"product-title\" data-tticheck=\"true\" data-spm-anchor-id=\"a2g0o.detail.0.i6.5456lKsBlKsBkI\"\u003eTOPPING A90 Discrete Fully Dirscrete Balanced Headphone Amplifier NFCA 4Pin XLR \/4.4 Balanced\/6.35mm SE Output Pre-amplifier\u003c\/h1\u003e\n\u003cp\u003eBuilt with four fully discrete NFCA modules composed of 39 matched transistors each, it delivers 9800mW×2 power at 16Ω, ultra-low THD+N below 0.00005% and 145dB dynamic range, with output impedance under 0.1Ω to effortlessly drive IEMs, dynamic and planar headphones. Two gain modes suit all headphone types, paired with 0.2uVrms ultra-quiet background noise.\u003c\/p\u003e\n\u003cp\u003ePrecision R2R relay volume control supports independent volume memory for inputs\/outputs and custom startup volume. It serves dual roles: headphone amp and balanced preamp to directly power active speakers. The GND\/LIFT switch eliminates ground loop hum in multi-device setups.\u003c\/p\u003e\n\u003cp\u003eEquipped with 4-Pin XLR, 4.4mm balanced and 6.35mm SE headphone jacks, plus XLR\/RCA I\/O expandable via EXT90 for extra inputs. 12V trigger IN\/OUT enables synchronized power control with matching DACs. Full-function remote, CNC aluminum chassis in black \u0026amp; silver, perfectly stacked with D90 III SABRE to build flagship full-balanced desktop HiFi systems.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_1.jpg?v=1790562902\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_2.jpg?v=1790562916\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_3.jpg?v=1790562937\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_4.jpg?v=1790562958\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_5.jpg?v=1790562976\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_6.jpg?v=1790563007\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_7.jpg?v=1790563019\" alt=\"\"\u003e\u003cimg\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_8.jpg?v=1790563041\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_9.jpg?v=1790563057\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_10.jpg?v=1790563070\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_11.jpg?v=1790563081\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_12.jpg?v=1790563093\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_13.jpg?v=1790563110\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_14.jpg?v=1790563123\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_15.jpg?v=1790563136\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_16.jpg?v=1790563154\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_17.jpg?v=1790563167\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_18.jpg?v=1790563182\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_19.jpg?v=1790563195\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_20.jpg?v=1790563207\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_21.jpg?v=1790563220\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPING_A90_Discrete_Fully_Dirscrete_Balanced_Headphone_Amplifier_22.jpg?v=1790563237\" alt=\"\"\u003e\u003c\/p\u003e","brand":"TOPPING","offers":[{"title":"Black","offer_id":48900365615197,"sku":null,"price":599.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":48900365647965,"sku":null,"price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/2435\/0813\/files\/TOPPINGA90DiscreteFullyDirscreteBalancedHeadphoneAmplifier_1.png?v=1790563256","url":"https:\/\/hifiso.com\/products\/topping-a90-discrete-fully-dirscrete-balanced-headphone-amplifier","provider":"HiFiSO","version":"1.0","type":"link"}