{"product_id":"jl-audio-rd400-4","title":"JL Audio RD400\/4: 4 Ch. Class D Full-Range Amplifier, 400 W","description":"Utilizing our exclusive NexD™ high-speed switching technologies, the ultra-compact RD400\/4 amplifier is engineered to deliver loads of audio output power, with incredible efficiency and low distortion. Don’t let its modern styling and small size fool you though, this little powerhouse churns out 100 watts of crystal-clear audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms.\n\u003cp data-mce-fragment=\"1\"\u003eFor your convenience, the RD400\/4’s controls can be found on top of the amplifier, beneath a protective cover, with all connections located along one side of its chassis. Studio-grade signal processing features include high or low-pass 12 dB \/ octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting most input voltage levels. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment, along with all-new input type switches for bridging of stereo output channels without needing to use Y-adaptors.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOnboard LED-clipping indicators are also included with your RD400\/4. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. You’ll also find a set of preamp outputs on-hand, so you can pass signals to another amplifier, almost effortlessly. The RD400\/4 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv aria-controls=\"product-tab-rated-continuous-rms-power-14-4-v-content\" id=\"product-tab-rated-continuous-rms-power-14-4-v\" aria-expanded=\"true\" class=\"product-tab-title\" tabindex=\"0\" itemprop=\"title\"\u003e\n\u003cstrong\u003eRated Continuous (RMS) Power @ 14.4 V\u003c\/strong\u003e \u003cspan class=\"icon-toggle\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"product-tab-rated-continuous-rms-power-14-4-v\" id=\"product-tab-rated-continuous-rms-power-14-4-v-content\" class=\"product-tab-content\" itemprop=\"content\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e@ 4 Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e75 W RMS x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e@ 2 Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e100 W RMS x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eBridged @ 4Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e200 W RMS x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cdiv aria-controls=\"product-tab-rated-continuous-rms-power-12-5-v-content\" id=\"product-tab-rated-continuous-rms-power-12-5-v\" aria-expanded=\"true\" class=\"product-tab-title\" tabindex=\"0\" itemprop=\"title\"\u003e\n\u003cstrong\u003eRated Continuous (RMS) Power @ 12.5 V\u003c\/strong\u003e \u003cspan class=\"icon-toggle\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"product-tab-rated-continuous-rms-power-12-5-v\" id=\"product-tab-rated-continuous-rms-power-12-5-v-content\" class=\"product-tab-content\" itemprop=\"content\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e@ 4 Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e60 W RMS x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e@ 2 Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e90 W RMS x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eBridged @ 4Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e180 W RMS x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cdiv aria-controls=\"product-tab-general-specifications-content\" id=\"product-tab-general-specifications\" aria-expanded=\"true\" class=\"product-tab-title\" tabindex=\"0\" itemprop=\"title\"\u003e\n\u003cstrong\u003eGeneral Specifications\u003c\/strong\u003e \u003cspan class=\"icon-toggle\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"product-tab-general-specifications\" id=\"product-tab-general-specifications-content\" class=\"product-tab-content\" itemprop=\"content\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e12 Hz - 22 kHz (+0, -1dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eS\/N Ratio, referred to highest rated power\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u0026gt;104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eS\/N Ratio, referred to 1 W\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u0026gt;84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eDamping Factor @ 4 Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u0026gt;150 \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eDamping Factor @ 2 Ω\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u0026gt;75 \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eTHD+N @ Rated Power\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u0026lt;1% @ 2 Ω per Ch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eInput Voltage Range @ RCA Inputs\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eSwitchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eMin.Copper Power \/ Ground Wire Gauge\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e4 AWG wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eFuse Rating\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e40 A (AFS, AGU or MaxiFuse™)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cdiv aria-controls=\"product-tab-signal-processing-content\" id=\"product-tab-signal-processing\" aria-expanded=\"true\" class=\"product-tab-title\" tabindex=\"0\" itemprop=\"title\"\u003e\n\u003cstrong\u003eSignal Processing\u003c\/strong\u003e \u003cspan class=\"icon-toggle\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"product-tab-signal-processing\" id=\"product-tab-signal-processing-content\" class=\"product-tab-content\" itemprop=\"content\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eFilter Mode(s)\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eLow-Pass or High-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eFilter Slope(s)\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e12 dB\/octave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eFilter Frequency Range\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e50 Hz - 500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eDetented, Calibrated Filter Freq. Potentiometers\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eFilter Defeat Function\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eRemote Level Control\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eRemote Level Modes\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eChannel Input Mode Switch\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eYes (2\/4 ch.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003ePass-Through Preamp Output\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eBuffered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eSource Channel Selection for PreOuts\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cdiv aria-controls=\"product-tab-physical-specifications-content\" id=\"product-tab-physical-specifications\" aria-expanded=\"true\" class=\"product-tab-title\" tabindex=\"0\" itemprop=\"title\"\u003e\n\u003cstrong\u003ePhysical Specifications\u003c\/strong\u003e \u003cspan class=\"icon-toggle\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"product-tab-physical-specifications\" id=\"product-tab-physical-specifications-content\" class=\"product-tab-content\" itemprop=\"content\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/embed.widencdn.net\/svg\/jlaudio\/dehiy8phra\/RD400_4_Dimensions.svg?u=rfhkrg\"\u003e\u003c\/div\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eHeight (H)\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e2.13 in \/ 54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eWidth (W)\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e9.78 in \/ 248 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003eDepth (D)\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e6.96 in \/ 177 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"JL Audio","offers":[{"title":"Default Title","offer_id":44018693454,"sku":"RD400\/4","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1344\/1149\/products\/af2927b4199f9c9f86a89b59c81dab58.jpg?v=1571439231","url":"https:\/\/froomanscarstorio.shop\/products\/jl-audio-rd400-4","provider":"Freemans Car Stereo","version":"1.0","type":"link"}