{"product_id":"topping-a50-iii","title":"Topping A50 III Headphone Amp — NFCA, 4.4mm Balanced, 3500mW x 2","description":"\u003cp class=\"tp-summary\"\u003eThe Topping A50 III is a desktop headphone amplifier built on NFCA modules, with a 6.35mm output and a 4.4mm balanced output, RCA and balanced TRS inputs, and up to 3500mW x 2 into 16Ω from the balanced jack. It suits listeners who already own a DAC and want one amp for sensitive IEMs and demanding full-size headphones.\u003c\/p\u003e\n\u003ch2\u003eWho the Topping A50 III is for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDemanding headphones:\u003c\/strong\u003e The 4.4mm balanced output delivers 2700mW x 2 into 32Ω, 760mW x 2 into 300Ω and 395mW x 2 into 600Ω.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitive IEMs:\u003c\/strong\u003e Three gain steps start at -12dB on the 6.35mm jack, and Topping rates noise as low as 0.3µVrms at low gain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-ended or balanced DACs:\u003c\/strong\u003e A rear switch selects between RCA and balanced 6.35mm TRS inputs, so it connects to either kind of DAC output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStacked desktop systems:\u003c\/strong\u003e A 12V trigger input lets a source with a trigger output, such as the Topping D50 III DAC it is designed to pair with, switch it on and off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkip it if:\u003c\/strong\u003e You need a DAC, USB or Bluetooth input or a preamp output: the A50 III is an analog headphone amp only, and it runs from an external 15V adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTopping A50 III key specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier:\u003c\/strong\u003e NFCA (Nested Feedback Composite Amplifier) modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced output (4.4mm):\u003c\/strong\u003e 3500mW x 2 @16Ω, 2700mW x 2 @32Ω, 760mW x 2 @300Ω, 395mW x 2 @600Ω (THD+N \u0026lt;0.1%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-ended output (6.35mm):\u003c\/strong\u003e 2150mW x 2 @16Ω, 1400mW x 2 @32Ω, 190mW x 2 @300Ω, 100mW x 2 @600Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistortion and noise:\u003c\/strong\u003e THD+N \u0026lt;0.00006% at 1kHz; SNR and dynamic range up to 144dB; output impedance \u0026lt;0.1Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e Low \/ Medium \/ High: -12dB, 0dB, +11.9dB (6.35mm); -6dB, +6dB, +17.9dB (4.4mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA and balanced 6.35mm TRS (rear selector switch); 12V trigger in (3.5mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e DC 15V\/1A through a 5.5 × 2.1mm jack; 15V adapter included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and weight:\u003c\/strong\u003e 12.5 × 14.0 × 2.6cm; 495g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e A50 III, 15V DC adapter, 6.35mm-to-3.5mm adapter, product information card\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Black, Silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"tp-trust\"\u003eGenuine Topping stock. Free shipping on every order, 45-day returns.\u003c\/p\u003e","brand":"Topping","offers":[{"title":"Black","offer_id":46347900158087,"sku":"TOPPING A50 III-black","price":231.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":46347900190855,"sku":"TOPPING A50 III-silver","price":231.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/8769823749.jpg?v=1793201929","url":"https:\/\/tonepier.com\/products\/topping-a50-iii","provider":"TonePier","version":"1.0","type":"link"}