{"product_id":"smsl-pa400","title":"SMSL PA400 GaN Power Amplifier — 250W x 2, Bridged Mono, XLR\/RCA In","description":"\u003cp class=\"tp-summary\"\u003eThe SMSL PA400 is a Class D stereo power amplifier built on Infineon GaN transistors switching at up to 1MHz, rated 250W x 2 into 4Ω and 500W into 8Ω in XLR mono (bridged) mode, with TI PGA2311 volume control and a remote. It suits listeners driving passive speakers from a DAC or preamp.\u003c\/p\u003e\n\u003ch2\u003eWho the SMSL PA400 is for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive speaker systems:\u003c\/strong\u003e Rated 250W x 2 into 4Ω, with a menu setting that matches the amp to 4Ω or 8Ω speakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDAC-direct setups:\u003c\/strong\u003e The TI PGA2311 volume stage and RC-8A remote let a fixed-output DAC connect straight to the XLR or RCA input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreamp owners:\u003c\/strong\u003e A stereo pure-amplifier pass-through mode is built in for systems where an external preamp sets the volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono-block upgrades:\u003c\/strong\u003e In XLR mono mode, two PA400s form a stereo pair, each rated 500W into 8Ω.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkip it if:\u003c\/strong\u003e You want a one-box system: the PA400 takes analog XLR and RCA signals only, with no built-in DAC, Bluetooth or headphone output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSMSL PA400 key specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier:\u003c\/strong\u003e Class D with Infineon GaN FETs, switching at up to 1MHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power (stereo):\u003c\/strong\u003e 250W x 2 @ 4Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power (mono mode):\u003c\/strong\u003e 500W x 1 @ 8Ω (XLR mono input)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR \/ channel separation:\u003c\/strong\u003e 115dB \/ 75dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e XLR balanced, RCA line, mono XLR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput sensitivity:\u003c\/strong\u003e RCA 0.96Vrms; XLR 2.1Vrms (2.7Vrms in mono); 22kΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume and control:\u003c\/strong\u003e TI PGA2311 volume chip; front display and knob; RC-8A remote (2 x AAA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e Built-in supply, 100–240V AC; standby under 0.5W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and weight:\u003c\/strong\u003e 254 × 47.7 × 242mm (W × H × D); 2.58kg (5.69lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"tp-trust\"\u003eGenuine SMSL stock. Free shipping on every order, 45-day returns.\u003c\/p\u003e","brand":"SMSL","offers":[{"title":"Default Title","offer_id":46347886133383,"sku":"SMSL PA400 silver","price":380.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/8169495680.jpg?v=1793201564","url":"https:\/\/tonepier.com\/products\/smsl-pa400","provider":"TonePier","version":"1.0","type":"link"}