{"product_id":"des400-4d-des-4-channel-full-range-class-d-amplifier","title":"Diamond Audio 4-Channel DES Series Full Range Class D Amplifier - DES400.4D","description":"\u003ch2\u003eDiamond Audio 4-Channel DES Series Full Range Class D Amplifier - DES400.4D\u003c\/h2\u003e\n\u003cp data-end=\"446\" data-start=\"69\"\u003eElevate your system with the \u003cstrong data-end=\"165\" data-start=\"98\"\u003eDiamond Audio DES Series 4-Channel Full Range Class D Amplifier\u003c\/strong\u003e, engineered for \u003cstrong data-end=\"264\" data-start=\"182\"\u003eaudiophiles who demand clean power, precision control, and dynamic performance\u003c\/strong\u003e. As part of the flagship \u003cstrong data-end=\"318\" data-start=\"290\"\u003eDiamond Elite DES Series\u003c\/strong\u003e, this amplifier delivers \u003cstrong data-end=\"445\" data-start=\"344\"\u003epremium sound quality, installation flexibility, and consistent power across all impedance levels\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"446\" data-start=\"69\"\u003eThe \u003cstrong data-end=\"2456\" data-start=\"2408\"\u003eDiamond Audio DES Series 4-Channel Amplifier\u003c\/strong\u003e delivers powerful, refined, and distortion-free performance, making it the ideal solution for \u003cstrong data-end=\"2627\" data-start=\"2551\"\u003ehigh-end car audio systems seeking superior clarity, control, and output\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"884\" data-start=\"448\"\u003eBuilt with advanced \u003cstrong data-end=\"508\" data-start=\"468\"\u003eClass D digital amplifier technology\u003c\/strong\u003e, the \u003cstrong data-end=\"551\" data-start=\"514\"\u003eDiamond Audio 4-channel amplifier\u003c\/strong\u003e produces \u003cstrong data-end=\"614\" data-start=\"561\"\u003e170W RMS x 4 at 2 ohms and 140W RMS x 4 at 4 ohms\u003c\/strong\u003e, with the ability to bridge into \u003cstrong data-end=\"670\" data-start=\"648\"\u003e400W x 2 at 4 ohms\u003c\/strong\u003e. This versatile configuration makes it ideal for powering \u003cstrong data-end=\"818\" data-start=\"729\"\u003ecomponent speakers, coaxial speakers, or bridging channels for subwoofer applications\u003c\/strong\u003e, delivering rich, detailed sound across the full frequency range.\u003c\/p\u003e\n\u003cp data-end=\"1200\" data-start=\"886\"\u003eEngineered using the latest \u003cstrong data-end=\"959\" data-start=\"914\"\u003edigital chipset and full PWM power supply\u003c\/strong\u003e, the \u003cstrong data-end=\"989\" data-start=\"965\"\u003eDES Series amplifier\u003c\/strong\u003e ensures efficient operation with minimal distortion. With \u003cstrong data-end=\"1071\" data-start=\"1048\"\u003eTHD as low as 0.07%\u003c\/strong\u003e and a \u003cstrong data-end=\"1118\" data-start=\"1078\"\u003esignal-to-noise ratio up to -97.4dBA\u003c\/strong\u003e, this amplifier delivers clean, accurate audio reproduction for high-end systems.\u003c\/p\u003e\n\u003cp data-end=\"1578\" data-start=\"1202\"\u003eFine-tune your system with \u003cstrong data-end=\"1296\" data-start=\"1229\"\u003evariable high-pass and low-pass crossover controls (35Hz–350Hz)\u003c\/strong\u003e, allowing precise tuning for optimal speaker performance and sound staging. The \u003cstrong data-end=\"1408\" data-start=\"1377\"\u003eDiamond Audio DES amplifier\u003c\/strong\u003e also features \u003cstrong data-end=\"1455\" data-start=\"1423\"\u003ebalanced differential inputs\u003c\/strong\u003e for noise-free signal transmission and a \u003cstrong data-end=\"1527\" data-start=\"1497\"\u003ehigh damping factor (\u0026gt;250)\u003c\/strong\u003e for improved speaker control and tighter response.\u003c\/p\u003e\n\u003cp data-end=\"1902\" data-start=\"1580\"\u003eDesigned for seamless integration, this \u003cstrong data-end=\"1652\" data-start=\"1620\"\u003efull-range Class D amplifier\u003c\/strong\u003e includes \u003cstrong data-end=\"1721\" data-start=\"1662\"\u003emultiple auto turn-on options (VOX, DC offset, and REM)\u003c\/strong\u003e, ensuring compatibility with both factory and aftermarket head units. Built-in \u003cstrong data-end=\"1851\" data-start=\"1801\"\u003eshort circuit, thermal, and voltage protection\u003c\/strong\u003e ensures long-lasting durability and system safety.\u003c\/p\u003e\n\u003ch5 data-end=\"1920\" data-start=\"1904\" data-section-id=\"1iz91iu\"\u003eFeatures\u003c\/h5\u003e\n\u003cp data-end=\"2402\" data-start=\"1922\"\u003e• \u003cstrong data-end=\"1966\" data-start=\"1924\"\u003e4-channel full range Class D amplifier\u003c\/strong\u003e\u003cbr data-end=\"1969\" data-start=\"1966\"\u003e• \u003cstrong data-end=\"2023\" data-start=\"1971\"\u003e170W x 4 @ 2Ω \/ 140W x 4 @ 4Ω \/ 400W x 2 bridged\u003c\/strong\u003e\u003cbr data-end=\"2026\" data-start=\"2023\"\u003e• \u003cstrong data-end=\"2077\" data-start=\"2028\"\u003eDiamond Elite DES Series flagship performance\u003c\/strong\u003e\u003cbr data-end=\"2080\" data-start=\"2077\"\u003e• \u003cstrong data-end=\"2137\" data-start=\"2082\"\u003eAdvanced digital chipset with full PWM power supply\u003c\/strong\u003e\u003cbr data-end=\"2140\" data-start=\"2137\"\u003e• \u003cstrong data-end=\"2194\" data-start=\"2142\"\u003eVariable HPF\/LPF crossover controls (35Hz–350Hz)\u003c\/strong\u003e\u003cbr data-end=\"2197\" data-start=\"2194\"\u003e• \u003cstrong data-end=\"2238\" data-start=\"2199\"\u003eVOX \/ DC \/ REM auto turn-on options\u003c\/strong\u003e\u003cbr data-end=\"2241\" data-start=\"2238\"\u003e• \u003cstrong data-end=\"2292\" data-start=\"2243\"\u003eBalanced differential inputs for clean signal\u003c\/strong\u003e\u003cbr data-end=\"2295\" data-start=\"2292\"\u003e• \u003cstrong data-end=\"2348\" data-start=\"2297\"\u003eHigh damping factor for precise speaker control\u003c\/strong\u003e\u003cbr data-end=\"2351\" data-start=\"2348\"\u003e• \u003cstrong data-end=\"2402\" data-start=\"2353\"\u003eCompact, premium design for easy installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eVehicle-specific saddlebag lid audio upgrade\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e designed for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1998–2013 Harley-Davidson Touring\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e motorcycles with a precision-fit installation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIncludes MS692CX2 6x9-inch 2Ω speakers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e delivering strong bass, clear vocals, and high-output performance for highway riding.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete lid kit design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides a clean, factory-style appearance while improving rear sound coverage.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDurable speaker construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e helps withstand vibration, road conditions, and everyday motorcycle use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAn excellent choice for Harley riders\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e seeking louder, fuller rear audio with easy integration and premium sound performance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 dir=\"ltr\"\u003e   \u003cbr\u003eQ\u0026amp;A    \u003c\/h5\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What is the Diamond Audio DES400.4D designed for?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: The DES400.4D is a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4-channel full-range Class D amplifier\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e designed to power speakers, coaxial systems, and custom car audio setups with efficient, clean output.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: How much power does the DES400.4D deliver?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It delivers \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e170W x 4 RMS at 2Ω\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e140W x 4 RMS at 4Ω\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, and up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e400W x 2 bridged at 4Ω\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for flexible system configurations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Can the DES400.4D power multiple speaker setups?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. Its 4-channel design allows it to run front\/rear speakers or be bridged for higher-output applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Does the DES400.4D include tuning controls?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. It features adjustable high-pass and low-pass crossovers, balanced inputs, and multiple turn-on options for easy installation and sound tuning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eQ: Why choose the Diamond Audio DES400.4D?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: It combines compact size, Class D efficiency, strong multi-channel power, and flexible tuning for a high-performance audio upgrade.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\n\u003cbr\u003eMaintenance Tips    \u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eClean the amplifier surface with a soft, dry microfiber cloth to prevent dust buildup.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaintain proper airflow around the amplifier to ensure efficient cooling and prevent overheating.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInspect power, ground, RCA, and speaker connections regularly for secure, corrosion-free contact.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck fuses and wiring periodically for wear, damage, or loose connections.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep the amplifier protected from excessive moisture, heat, and direct sunlight.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTighten mounting hardware as needed to reduce vibration and maintain reliable performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Diamond Audio","offers":[{"title":"Default Title","offer_id":45780544192703,"sku":"DES400.4D","price":389.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/des400.4d-1.jpg?v=1782544092","url":"https:\/\/www.mybackyardzone.com\/products\/des400-4d-des-4-channel-full-range-class-d-amplifier","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}