{"product_id":"apos-certified-topping-pa3s-fully-balanced-class-d-amplifier","title":"TOPPING PA3s Fully Balanced Class D Amplifier (Apos Certified)","description":"\u003ch1\u003e\u003cb\u003eFully balanced, super efficient\u003c\/b\u003e\u003c\/h1\u003e\n \u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThe TOPPING PA3s is a fully balanced Class D power amplifier--an affordable and efficient option for powering your bookshelf or floor stand speakers. As a balanced amplifier, it powers each incoming channel with a separate amplifier chip. As a Class D amp, it uses far less power than Class A amps, making it super efficient. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2\u003e\u003cb\u003eFully balanced Class D amplification\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eIn the PA3s, each channel is separately amplified by its own Class D power amplifier chip. By separating the channels, the PA3s achieves greatly reduced crosstalk and better audio performance. Each chip has its own heat dissipation, which extends the lifespan of the amp. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2\u003e\u003cb\u003e80W x2 of power\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eDrive any bookshelf or floor stand speakers with 80Wx2 of power at 4Ω load. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2\u003e\u003cb\u003eBalanced + single-ended inputs\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eConnect multiple sources via TRS balanced and single-ended RCA inputs. The balanced input option eliminates potential ground loop problems, providing pristine audio without hum. Either input is selectable using the front panel button, and the PA3s will remember the last input selected when you turn it on. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003ch3\u003e\u003cb\u003eProduct highlights\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e80W x2 @4Ω, THD+N \u0026lt;10%\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e65W x2 @4Ω, THD+N \u0026lt;1%\u003c\/li\u003e\n \u003cli\u003eTwo MA12070 Class D power amplifier chips \u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"font-weight: 400;\"\u003eFully balanced amplifier\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u0026lt;0.004% THD+N\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"font-weight: 400;\"\u003eRCA and TRS inputs\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cb\u003eSpecs\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eSingle-ended input\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eTHD+N @1kHz (A-wt)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.005% @4Ω 5W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.004% @8Ω 5W\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eTHD @20-10kHz (20kBW)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.008% @4Ω 5W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.007% @8Ω 5W\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eSNR: 107dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eDNR: 107dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003eFrequency response: 20Hz-40kHz (±0.1dB)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOutput level\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e46Vpp@4Ω\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e48Vpp@8Ω\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eNoise (A-wt): \u0026lt;70uVrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eChannel crosstalk @1kHz: -96dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eInput sensitivity: 0.92Vrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eGain: 25.2dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eChannel balance: 0.5dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eBalance input\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eTHD+N @1kHz (A-wt)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.0045% @4Ω 5W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.004% @8Ω 5W\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eTHD @20-10kHz (20kBW)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.007% @4Ω 5W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u0026lt;0.006% @8Ω 5W\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eSNR: 112dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eDNR: 112dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003eFrequency response: 20Hz-40kHz (±0.1dB)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOutput level\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e46Vpp@4Ω\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e48Vpp@8Ω\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eNoise (A-wt): \u0026lt;70uVrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eChannel crosstalk @1kHz: -100dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eInput sensitivity: 1.75Vrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eGain: 19.5dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eChannel balance: 0.5dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOutput power\u003c\/span\u003e\u003c\/li\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e80W x2 @4Ω THD+N \u0026lt;10%\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e45W x2 @8Ω THD+N \u0026lt;10% \u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e65W x2 @4Ω THD+N \u0026lt;1%\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e37W x2 @8Ω THD+N \u0026lt;1% \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli style=\"font-weight: 400;\"\u003eAdapter impedance: 4-8Ω \u003cbr\u003e\n \u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003eDimensions: 6.6” x 4.7” x 1.5” (16.8 x 12 x 4 cm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eWhat’s included\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003ePA3s\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eAC to DC power adapter\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eAC cable\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eUser manual\u003c\/span\u003e\u003c\/li\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eWarranty card\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cb\u003eWhat pairs well\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli style=\"font-weight: 400;\"\u003e\u003ca href=\"https:\/\/apos.audio\/products\/topping-d10b-balanced-desktop-dac?_pos=1\u0026amp;_sid=534e93892\u0026amp;_ss=r\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eTOPPING D10 Balanced DAC\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n \u003c\/ul\u003e","brand":"TOPPING","offers":[{"title":"[Like New] Black","offer_id":46878591811759,"sku":"APS-AC-0479-1-LN","price":111.75,"currency_code":"USD","in_stock":true},{"title":"[Very Good] Black","offer_id":46878591844527,"sku":"APS-AC-0479-1-VG","price":111.75,"currency_code":"USD","in_stock":true},{"title":"[Like New] Silver","offer_id":46878591877295,"sku":"APS-AC-0479-2-LN","price":104.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-topping-headphone-dac-amp-topping-pa3s-fully-balanced-class-d-amplifier-apos-certified-refurbished-1171564671.jpg?v=1778011044","url":"https:\/\/freshized.com\/products\/apos-certified-topping-pa3s-fully-balanced-class-d-amplifier","provider":"Freshized","version":"1.0","type":"link"}