{"product_id":"des400-2d-des-2-channel-full-range-class-d-amplifier","title":"Diamond Audio 2-Channel DES Series Full Range Class D Amplifier - DES400.2D","description":"\u003ch2\u003eDiamond Audio 2-Channel DES Series Full Range Class D Amplifier - DES400.2D\u003c\/h2\u003e\n\u003cp data-start=\"69\" data-end=\"466\"\u003eExperience flagship-level performance with the \u003cstrong data-start=\"116\" data-end=\"183\"\u003eDiamond Audio DES Series 2-Channel Full Range Class D Amplifier\u003c\/strong\u003e, engineered to deliver \u003cstrong data-start=\"207\" data-end=\"268\"\u003eclean power, precision control, and dynamic sound quality\u003c\/strong\u003e for high-end car audio systems. As part of the \u003cstrong data-start=\"316\" data-end=\"354\"\u003eDiamond Elite DES amplifier lineup\u003c\/strong\u003e, this model is designed with a compact footprint while maintaining powerful output across all impedance levels.\u003c\/p\u003e\n\u003cp data-start=\"468\" data-end=\"855\"\u003ePowered by advanced \u003cstrong data-start=\"488\" data-end=\"528\"\u003eClass D digital amplifier technology\u003c\/strong\u003e, the \u003cstrong data-start=\"534\" data-end=\"571\"\u003eDiamond Audio 2-channel amplifier\u003c\/strong\u003e delivers \u003cstrong data-start=\"581\" data-end=\"634\"\u003e250W RMS x 2 at 2 ohms and 200W RMS x 2 at 4 ohms\u003c\/strong\u003e, with the ability to bridge into \u003cstrong data-start=\"668\" data-end=\"690\"\u003e500W x 1 at 4 ohms\u003c\/strong\u003e. This flexible configuration allows it to power \u003cstrong data-start=\"739\" data-end=\"794\"\u003ecomponent speakers, coaxial speakers, or subwoofers\u003c\/strong\u003e, making it ideal for both system upgrades and custom builds.\u003c\/p\u003e\n\u003cp data-start=\"857\" data-end=\"1221\"\u003eEngineered with the latest \u003cstrong data-start=\"884\" data-end=\"940\"\u003edigital chipset technology and full PWM power supply\u003c\/strong\u003e, the \u003cstrong data-start=\"946\" data-end=\"970\"\u003eDES Series amplifier\u003c\/strong\u003e provides efficient performance with minimal distortion and exceptional clarity. With a \u003cstrong data-start=\"1058\" data-end=\"1101\"\u003esignal-to-noise ratio of up to -98.9dBA\u003c\/strong\u003e and \u003cstrong data-start=\"1106\" data-end=\"1129\"\u003eTHD as low as 0.05%\u003c\/strong\u003e, this amplifier ensures clean, accurate sound reproduction across the full frequency range.\u003c\/p\u003e\n\u003cp data-start=\"1223\" data-end=\"1561\"\u003eFine-tune your system with \u003cstrong data-start=\"1250\" data-end=\"1317\"\u003evariable high-pass and low-pass crossover controls (35Hz–350Hz)\u003c\/strong\u003e, allowing precise adjustment for optimal speaker performance. The \u003cstrong data-start=\"1384\" data-end=\"1415\"\u003eDiamond Audio DES amplifier\u003c\/strong\u003e also features \u003cstrong data-start=\"1430\" data-end=\"1489\"\u003emultiple auto turn-on options (VOX, DC offset, and REM)\u003c\/strong\u003e, ensuring seamless integration with factory and aftermarket head units.\u003c\/p\u003e\n\u003cp data-start=\"1563\" data-end=\"1820\"\u003eBuilt for performance and installation flexibility, this \u003cstrong data-start=\"1620\" data-end=\"1652\"\u003efull-range Class D amplifier\u003c\/strong\u003e offers \u003cstrong data-start=\"1660\" data-end=\"1692\"\u003ebalanced differential inputs\u003c\/strong\u003e for noise-free signal transmission and a \u003cstrong data-start=\"1734\" data-end=\"1764\"\u003ehigh damping factor (\u0026gt;250)\u003c\/strong\u003e for improved speaker control and tighter bass response.\u003c\/p\u003e\n\u003cp data-start=\"1563\" data-end=\"1820\"\u003eThe \u003cstrong data-start=\"2326\" data-end=\"2374\"\u003eDiamond Audio DES Series 2-Channel Amplifier\u003c\/strong\u003e delivers powerful, refined, and distortion-free sound, making it the perfect choice for \u003cstrong data-start=\"2463\" data-end=\"2533\"\u003epremium car audio systems seeking superior performance and control\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch5 data-section-id=\"1iz91iu\" data-start=\"1822\" data-end=\"1838\"\u003eFeatures\u003c\/h5\u003e\n\u003cp data-start=\"1840\" data-end=\"2320\"\u003e• \u003cstrong data-start=\"1842\" data-end=\"1884\"\u003e2-channel full range Class D amplifier\u003c\/strong\u003e\u003cbr data-start=\"1884\" data-end=\"1887\"\u003e• \u003cstrong data-start=\"1889\" data-end=\"1941\"\u003e250W x 2 @ 2Ω \/ 200W x 2 @ 4Ω \/ 500W x 1 bridged\u003c\/strong\u003e\u003cbr data-start=\"1941\" data-end=\"1944\"\u003e• \u003cstrong data-start=\"1946\" data-end=\"1995\"\u003eDiamond Elite DES Series flagship performance\u003c\/strong\u003e\u003cbr data-start=\"1995\" data-end=\"1998\"\u003e• \u003cstrong data-start=\"2000\" data-end=\"2055\"\u003eAdvanced digital chipset with full PWM power supply\u003c\/strong\u003e\u003cbr data-start=\"2055\" data-end=\"2058\"\u003e• \u003cstrong data-start=\"2060\" data-end=\"2112\"\u003eVariable HPF\/LPF crossover controls (35Hz–350Hz)\u003c\/strong\u003e\u003cbr data-start=\"2112\" data-end=\"2115\"\u003e• \u003cstrong data-start=\"2117\" data-end=\"2156\"\u003eVOX \/ DC \/ REM auto turn-on options\u003c\/strong\u003e\u003cbr data-start=\"2156\" data-end=\"2159\"\u003e• \u003cstrong data-start=\"2161\" data-end=\"2210\"\u003eBalanced differential inputs for clean signal\u003c\/strong\u003e\u003cbr data-start=\"2210\" data-end=\"2213\"\u003e• \u003cstrong data-start=\"2215\" data-end=\"2266\"\u003eHigh damping factor for precise speaker control\u003c\/strong\u003e\u003cbr data-start=\"2266\" data-end=\"2269\"\u003e• \u003cstrong data-start=\"2271\" data-end=\"2320\"\u003eCompact, premium design for easy installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch5 data-start=\"1468\" data-end=\"1799\"\u003eWhat our Experts Think  \u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:57a20e7f-f1ef-4da9-9d5c-4d5ec57a6c7b-13\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:57a20e7f-f1ef-4da9-9d5c-4d5ec57a6c7b-13\" data-turn-id-container=\"request-WEB:57a20e7f-f1ef-4da9-9d5c-4d5ec57a6c7b-13\" data-testid=\"conversation-turn-28\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"f3b44a7d-2151-4c46-9851-ad79398d75a5\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"28\" data-end=\"1245\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"r4446b\" data-start=\"28\" data-end=\"293\"\u003e\n\u003cstrong data-start=\"30\" data-end=\"72\"\u003eCompact amplifier, serious performance\u003c\/strong\u003e – The \u003cstrong data-start=\"79\" data-end=\"92\" data-is-only-node=\"\"\u003eDES400.2D\u003c\/strong\u003e delivers \u003cstrong data-start=\"102\" data-end=\"123\"\u003e200W RMS x 2 @ 4Ω\u003c\/strong\u003e, \u003cstrong data-start=\"125\" data-end=\"146\"\u003e250W RMS x 2 @ 2Ω\u003c\/strong\u003e, or \u003cstrong data-start=\"151\" data-end=\"172\"\u003e500W bridged @ 4Ω\u003c\/strong\u003e, making it ideal for powering component speakers, coaxials, or a single subwoofer. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1h21prn\" data-start=\"294\" data-end=\"534\"\u003e\n\u003cstrong data-start=\"296\" data-end=\"328\"\u003eEfficient Class D technology\u003c\/strong\u003e – Advanced \u003cstrong data-start=\"340\" data-end=\"361\" data-is-only-node=\"\"\u003eClass D circuitry\u003c\/strong\u003e with a full PWM power supply provides clean, powerful output while minimizing heat and current draw for reliable everyday performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ouiubb\" data-start=\"535\" data-end=\"800\"\u003e\n\u003cstrong data-start=\"537\" data-end=\"563\"\u003ePrecision audio tuning\u003c\/strong\u003e – Features \u003cstrong data-start=\"575\" data-end=\"632\" data-is-only-node=\"\"\u003evariable high-pass and low-pass crossovers (35–350Hz)\u003c\/strong\u003e, balanced differential inputs, and multiple auto turn-on options for seamless integration with factory or aftermarket head units. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16802aj\" data-start=\"801\" data-end=\"1004\"\u003e\n\u003cstrong data-start=\"803\" data-end=\"828\"\u003ePremium build quality\u003c\/strong\u003e – A \u003cstrong data-start=\"833\" data-end=\"848\" data-is-only-node=\"\"\u003e4-layer PCB\u003c\/strong\u003e, compact chassis, and high damping factor ensure low distortion, excellent speaker control, and long-term durability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"wwc290\" data-start=\"1005\" data-end=\"1245\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"1007\" data-end=\"1040\"\u003eExcellent for custom upgrades\u003c\/strong\u003e – A versatile 2-channel amplifier that combines high output, flexible installation, and refined sound quality, making it a great choice for premium car audio systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5 data-start=\"1468\" data-end=\"1799\"\u003e \u003cbr\u003eQ\u0026amp;A  \u003c\/h5\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What is the Diamond Audio DES400.2D designed for?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It is a 2-channel full-range Class D amplifier designed to power speakers with clean, efficient audio performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What are the benefits of Class D technology?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Class D operation delivers high power output with excellent efficiency, reduced heat, and a compact footprint.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Can this amplifier power a pair of speakers?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. Its 2-channel design is ideal for driving front or rear speakers in car, truck, or powersports audio systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Does it include adjustable sound controls?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. It features adjustable gain and crossover controls for optimized system tuning and sound quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eQ: Is the DES400.2D suitable for aftermarket audio upgrades?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. Its compact design and full-range performance make it an excellent choice for upgrading factory or custom audio systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 data-start=\"1468\" data-end=\"1799\"\u003e \u003cbr\u003eMaintenance Tips    \u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:3cd937b8-2b7e-4b8b-a5e0-e5c39fc005be-13\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:3cd937b8-2b7e-4b8b-a5e0-e5c39fc005be-13\" data-turn-id-container=\"request-WEB:3cd937b8-2b7e-4b8b-a5e0-e5c39fc005be-13\" data-testid=\"conversation-turn-28\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"927941ea-07bd-49b9-bc39-71d13c0daefc\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"22\" data-end=\"694\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"7c8xr6\" data-start=\"22\" data-end=\"104\"\u003eClean the amplifier with a soft, dry microfiber cloth to remove dust and debris.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1k92ppj\" data-start=\"105\" data-end=\"181\"\u003eKeep cooling fins and ventilation areas clear for proper heat dissipation.\u003c\/li\u003e\n\u003cli data-section-id=\"r4ds8f\" data-start=\"182\" data-end=\"281\"\u003eInspect power, ground, RCA, and speaker connections regularly for tight, corrosion-free contacts.\u003c\/li\u003e\n\u003cli data-section-id=\"agd3c9\" data-start=\"282\" data-end=\"360\"\u003eEnsure the amplifier is securely mounted to minimize vibration and movement.\u003c\/li\u003e\n\u003cli data-section-id=\"1o8i8p9\" data-start=\"361\" data-end=\"463\"\u003eSet gain correctly and avoid prolonged clipping or distortion to protect the amplifier and speakers.\u003c\/li\u003e\n\u003cli data-section-id=\"qardpl\" data-start=\"464\" data-end=\"533\"\u003eCheck the fuse and wiring periodically for signs of wear or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"u9s6jl\" data-start=\"534\" data-end=\"606\"\u003eKeep the amplifier dry and protected from excessive heat and moisture.\u003c\/li\u003e\n\u003cli data-section-id=\"xh20rb\" data-start=\"607\" data-end=\"694\" data-is-last-node=\"\"\u003eRe-tighten terminal screws during routine maintenance to ensure reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Diamond Audio","offers":[{"title":"Default Title","offer_id":45779986743487,"sku":"DES400.2D","price":392.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/des400.2d-1.jpg?v=1782538049","url":"https:\/\/www.mybackyardzone.com\/products\/des400-2d-des-2-channel-full-range-class-d-amplifier","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}