{"product_id":"topping-pa3s-fully-balanced-class-d-amplifier","title":"TOPPING PA3s Fully Balanced Class D Amplifier","description":"\u003ch1 data-mce-fragment=\"1\"\u003e\u003c\/h1\u003e\n \u003ch1 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eFully balanced, super efficient \u003c\/b\u003e\u003c\/h1\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" 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 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eFully balanced Class D amplification\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" 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 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003e80W x2 of power\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" 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 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eBalanced + single-ended inputs\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" 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 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eProduct highlights\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e80W x2 @4Ω, THD+N \u0026lt;10%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e65W x2 @4Ω, THD+N \u0026lt;1%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eTwo MA12070 Class D power amplifier chips \u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eFully balanced amplifier\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.004% THD+N\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eRCA and TRS inputs\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eSpecs\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eSingle-ended input\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eTHD+N @1kHz (A-wt)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.005% @4Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.004% @8Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eTHD @20-10kHz (20kBW)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.008% @4Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.007% @8Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eSNR: 107dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eDNR: 107dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eFrequency response: 20Hz-40kHz (±0.1dB)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eOutput level\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e46Vpp@4Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e48Vpp@8Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eNoise (A-wt): \u0026lt;70uVrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eChannel crosstalk @1kHz: -96dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eInput sensitivity: 0.92Vrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eGain: 25.2dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eChannel balance: 0.5dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eBalance input\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eTHD+N @1kHz (A-wt)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.0045% @4Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.004% @8Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eTHD @20-10kHz (20kBW)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.007% @4Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u0026lt;0.006% @8Ω 5W\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eSNR: 112dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eDNR: 112dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eFrequency response: 20Hz-40kHz (±0.1dB)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eOutput level\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e46Vpp@4Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e48Vpp@8Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eNoise (A-wt): \u0026lt;70uVrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eChannel crosstalk @1kHz: -100dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eInput sensitivity: 1.75Vrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eGain: 19.5dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eChannel balance: 0.5dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eOutput power\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e80W x2 @4Ω THD+N \u0026lt;10%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e45W x2 @8Ω THD+N \u0026lt;10% \u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e65W x2 @4Ω THD+N \u0026lt;1%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e37W x2 @8Ω THD+N \u0026lt;1% \u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eAdapter impedance: 4-8Ω \u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eDimensions: 6.6” x 4.7” x 1.5” (16.8 x 12 x 4 cm)\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eWhat’s included\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003ePA3s\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eAC to DC power adapter\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eAC cable\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eUser manual\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003eWarranty card\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eWhat pairs well\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/apos.audio\/products\/topping-d10b-balanced-desktop-dac?_pos=1\u0026amp;_sid=534e93892\u0026amp;_ss=r\"\u003e\u003cspan data-mce-fragment=\"1\" 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":"Black","offer_id":46878660460719,"sku":"APS-0479-1","price":149.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":46878660493487,"sku":"APS-0479-2","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-topping-headphone-amp-topping-pa3s-fully-balanced-class-d-amplifier-30108626321579.jpg?v=1778011953","url":"https:\/\/freshized.com\/products\/topping-pa3s-fully-balanced-class-d-amplifier","provider":"Freshized","version":"1.0","type":"link"}