{"product_id":"ruthless-audio-1500-4-4-channel-car-audio-amplifier","title":"Ruthless Audio 1500.4 – 4-Channel 1500W Full-Range Car Audio Amplifier","description":"\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] 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:f7d3f95a-c84a-4d63-889e-3ef38af01e37-25\" data-testid=\"conversation-turn-52\" data-scroll-anchor=\"false\" 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 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=\"f90649f5-f20c-4fa2-bbd8-ce3bea0c035e\" dir=\"auto\" data-message-model-slug=\"gpt-5-4-thinking\" 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 w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"99\"\u003e\u003cstrong data-start=\"0\" data-end=\"72\"\u003eRuthless Audio 1500.4 4-Channel 1800W Full-Range Car Audio Amplifier\u003c\/strong\u003e\u003cbr data-start=\"72\" data-end=\"75\"\u003eSold by AudioSellerz.com\u003c\/p\u003e\n\u003cp data-start=\"101\" data-end=\"616\"\u003eIf you need a serious 4-channel amplifier for mids, highs, mid-bass, or a full active front stage, the \u003cstrong data-start=\"204\" data-end=\"229\"\u003eRuthless Audio 1500.4\u003c\/strong\u003e is built for exactly that kind of system. This \u003cstrong data-start=\"277\" data-end=\"319\"\u003eClass D full-range 4-channel amplifier\u003c\/strong\u003e is made for loud daily drivers, demo vehicles, pro-audio door builds, motorcycle audio setups, and front-stage systems that need real speaker power with the tuning control to match. Shop more \u003cstrong data-start=\"512\" data-end=\"556\"\u003eRuthless Audio amplifiers and subwoofers\u003c\/strong\u003e here:\u003cbr data-start=\"562\" data-end=\"565\"\u003e\u003ca data-start=\"565\" data-end=\"616\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/collections\/ruthless-audio\"\u003ehttps:\/\/audiosellerz.com\/collections\/ruthless-audio\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\" fill=\"currentColor\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"618\" data-end=\"1089\"\u003eThe \u003cstrong data-start=\"622\" data-end=\"641\"\u003eRuthless 1500.4\u003c\/strong\u003e is rated at \u003cstrong data-start=\"654\" data-end=\"680\"\u003e250 watts x4 at 4 ohms\u003c\/strong\u003e, \u003cstrong data-start=\"682\" data-end=\"708\"\u003e450 watts x4 at 2 ohms\u003c\/strong\u003e, and \u003cstrong data-start=\"714\" data-end=\"748\"\u003e900 watts x2 at 4 ohms bridged\u003c\/strong\u003e on \u003cstrong data-start=\"752\" data-end=\"761\"\u003e14.4V\u003c\/strong\u003e, giving you the kind of output needed for serious speaker systems. That makes the \u003cstrong data-start=\"844\" data-end=\"873\"\u003eRuthless Audio 1500.4 amp\u003c\/strong\u003e a strong fit for \u003cstrong data-start=\"891\" data-end=\"914\"\u003eactive front stages\u003c\/strong\u003e, \u003cstrong data-start=\"916\" data-end=\"944\"\u003esemi-active front stages\u003c\/strong\u003e, \u003cstrong data-start=\"946\" data-end=\"974\"\u003epro audio mids and highs\u003c\/strong\u003e, \u003cstrong data-start=\"976\" data-end=\"999\"\u003edoor speaker builds\u003c\/strong\u003e, and even \u003cstrong data-start=\"1010\" data-end=\"1035\"\u003ebridged mid-bass duty\u003c\/strong\u003e when the setup calls for more power per channel pair.\u003c\/p\u003e\n\u003cp data-start=\"1091\" data-end=\"1548\"\u003eOne of the biggest reasons the \u003cstrong data-start=\"1122\" data-end=\"1167\"\u003eRuthless Audio 1500.4 4-channel amplifier\u003c\/strong\u003e stands out is that it gives you real multi-channel power without giving up tuning flexibility. If you are trying to run tweets, mids, and mid-bass with more authority than a basic full-range amp can offer, this amplifier is built for that kind of work. It can anchor the front half of a serious car audio system when paired with the right speakers, wiring, and electrical support.\u003c\/p\u003e\n\u003cp data-start=\"1550\" data-end=\"1915\"\u003eThe \u003cstrong data-start=\"1554\" data-end=\"1573\"\u003eRuthless 1500.4\u003c\/strong\u003e uses \u003cstrong data-start=\"1579\" data-end=\"1607\"\u003eTiffany-style RCA inputs\u003c\/strong\u003e for clean, solid signal transfer and \u003cstrong data-start=\"1645\" data-end=\"1682\"\u003e1\/0 gauge power and ground inputs\u003c\/strong\u003e to support the current draw that comes with a high-output 4-channel amp. It also operates on \u003cstrong data-start=\"1776\" data-end=\"1789\"\u003e8V to 16V\u003c\/strong\u003e, giving it the voltage range needed for real-world systems that may see different charging conditions depending on the build.\u003c\/p\u003e\n\u003cp data-start=\"1917\" data-end=\"2435\"\u003eThis amp also brings strong tuning control to the table. The \u003cstrong data-start=\"1978\" data-end=\"2003\"\u003eRuthless Audio 1500.4\u003c\/strong\u003e features \u003cstrong data-start=\"2013\" data-end=\"2050\"\u003einput sensitivity from 6V to 0.2V\u003c\/strong\u003e, a \u003cstrong data-start=\"2054\" data-end=\"2093\"\u003ehigh-pass filter from 20Hz to 800Hz\u003c\/strong\u003e with an \u003cstrong data-start=\"2102\" data-end=\"2138\"\u003ex10 multiplier for 200Hz to 8kHz\u003c\/strong\u003e, and a \u003cstrong data-start=\"2146\" data-end=\"2184\"\u003elow-pass filter from 50Hz to 800Hz\u003c\/strong\u003e with an \u003cstrong data-start=\"2193\" data-end=\"2229\"\u003ex10 multiplier for 500Hz to 8kHz\u003c\/strong\u003e. That makes it a strong option for \u003cstrong data-start=\"2265\" data-end=\"2283\"\u003emids and highs\u003c\/strong\u003e, \u003cstrong data-start=\"2285\" data-end=\"2316\"\u003efront-stage speaker systems\u003c\/strong\u003e, \u003cstrong data-start=\"2318\" data-end=\"2346\"\u003epro audio speaker builds\u003c\/strong\u003e, and \u003cstrong data-start=\"2352\" data-end=\"2369\"\u003eactive setups\u003c\/strong\u003e where crossover control is a big part of getting the sound right.\u003c\/p\u003e\n\u003cp data-start=\"2437\" data-end=\"2803\"\u003eA \u003cstrong data-start=\"2439\" data-end=\"2471\"\u003ebuilt-in clip light function\u003c\/strong\u003e helps you set gains more accurately and avoid clipping your speakers, which is a useful feature in loud systems where protecting expensive drivers matters. The listed \u003cstrong data-start=\"2639\" data-end=\"2677\"\u003eTHD at 4 ohms is greater than 0.01\u003c\/strong\u003e, and the \u003cstrong data-start=\"2687\" data-end=\"2715\"\u003erecommended fuse is 200A\u003c\/strong\u003e, making it clear this amp is built for real output and should be installed accordingly.\u003c\/p\u003e\n\u003cp data-start=\"2805\" data-end=\"3341\"\u003eThe \u003cstrong data-start=\"2809\" data-end=\"2834\"\u003eRuthless Audio 1500.4\u003c\/strong\u003e is ideal for a lot of serious speaker builds. It works well in \u003cstrong data-start=\"2898\" data-end=\"2921\"\u003eactive front stages\u003c\/strong\u003e where you need onboard high-pass and low-pass control for tweets, mids, and mid-bass. It also makes sense for \u003cstrong data-start=\"3032\" data-end=\"3057\"\u003epro audio door builds\u003c\/strong\u003e, \u003cstrong data-start=\"3059\" data-end=\"3087\"\u003emotorcycle audio systems\u003c\/strong\u003e, and \u003cstrong data-start=\"3093\" data-end=\"3122\"\u003eloud daily or demo builds\u003c\/strong\u003e that need strong 4-channel power without stacking multiple smaller amps. In the right setup, it can even be used for \u003cstrong data-start=\"3240\" data-end=\"3256\"\u003ebridged mids\u003c\/strong\u003e or \u003cstrong data-start=\"3260\" data-end=\"3283\"\u003esmall substage duty\u003c\/strong\u003e when configured as a \u003cstrong data-start=\"3305\" data-end=\"3340\"\u003e2-channel amp at 4 ohms bridged\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3343\" data-end=\"3567\"\u003eIf you are planning the rest of your system, wiring and install accessories matter too. Shop our \u003cstrong data-start=\"3440\" data-end=\"3494\"\u003eSky High Car Audio amp kits and wiring accessories\u003c\/strong\u003e here:\u003cbr data-start=\"3500\" data-end=\"3503\"\u003e\u003ca data-start=\"3503\" data-end=\"3567\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/collections\/sky-high-car-audio-amp-kits\"\u003ehttps:\/\/audiosellerz.com\/collections\/sky-high-car-audio-amp-kits\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\" fill=\"currentColor\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"3569\" data-end=\"3795\"\u003eIf you need help understanding speaker wiring and system planning for a 4-channel amplifier, read our \u003cstrong data-start=\"3671\" data-end=\"3705\"\u003ecar audio wiring diagram guide\u003c\/strong\u003e here:\u003cbr data-start=\"3711\" data-end=\"3714\"\u003e\u003ca data-start=\"3714\" data-end=\"3795\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/car-audio-wiring-diagram-guide\"\u003ehttps:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/car-audio-wiring-diagram-guide\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\" fill=\"currentColor\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"3797\" data-end=\"3934\"\u003eIf the build is growing into a larger electrical upgrade, shop our \u003cstrong data-start=\"3864\" data-end=\"3878\"\u003eBig 3 Kits\u003c\/strong\u003e here:\u003cbr data-start=\"3884\" data-end=\"3887\"\u003e\u003ca data-start=\"3887\" data-end=\"3934\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\"\u003ehttps:\/\/audiosellerz.com\/collections\/big-3-kits\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\" fill=\"currentColor\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"3936\" data-end=\"4144\"\u003eIf you need charging support for a stronger overall system, shop our \u003cstrong data-start=\"4005\" data-end=\"4028\"\u003eBrand X Alternators\u003c\/strong\u003e here:\u003cbr data-start=\"4034\" data-end=\"4037\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"3936\" data-end=\"4144\"\u003ehttps:\/\/audiosellerz.com\/collections\/brand-x\u003c\/p\u003e\n\u003cp data-start=\"4146\" data-end=\"4342\"\u003eYou can also learn more about charging support for bigger systems in our \u003cstrong data-start=\"4219\" data-end=\"4250\"\u003ehigh output alternator blog\u003c\/strong\u003e here:\u003cbr data-start=\"4256\" data-end=\"4259\"\u003e\u003ca data-start=\"4259\" data-end=\"4342\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/high-output-alternator-car-audio\"\u003ehttps:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/high-output-alternator-car-audio\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\" fill=\"currentColor\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"4344\" data-end=\"4440\"\u003e\u003cstrong data-start=\"4344\" data-end=\"4370\"\u003ePower Ratings at 14.4V\u003c\/strong\u003e\u003cbr data-start=\"4370\" data-end=\"4373\"\u003e250W x4 at 4 ohms\u003cbr data-start=\"4390\" data-end=\"4393\"\u003e450W x4 at 2 ohms\u003cbr data-start=\"4410\" data-end=\"4413\"\u003e900W x2 at 4 ohms bridged\u003c\/p\u003e\n\u003cp data-start=\"4442\" data-end=\"4916\"\u003e\u003cstrong data-start=\"4442\" data-end=\"4458\"\u003eKey Features\u003c\/strong\u003e\u003cbr data-start=\"4458\" data-end=\"4461\"\u003eClass D full-range 4-channel amplifier\u003cbr data-start=\"4499\" data-end=\"4502\"\u003eTiffany-style RCA inputs for clean signal transfer\u003cbr data-start=\"4552\" data-end=\"4555\"\u003e1\/0 power and ground inputs for higher current demand\u003cbr data-start=\"4608\" data-end=\"4611\"\u003eOperational voltage: 8V to 16V\u003cbr data-start=\"4641\" data-end=\"4644\"\u003eClip light function to help set gains correctly\u003cbr data-start=\"4691\" data-end=\"4694\"\u003eInput sensitivity: 6V to 0.2V\u003cbr data-start=\"4723\" data-end=\"4726\"\u003eHigh-pass filter: 20Hz to 800Hz\u003cbr data-start=\"4757\" data-end=\"4760\"\u003ex10 multiplier: 200Hz to 8kHz\u003cbr data-start=\"4789\" data-end=\"4792\"\u003eLow-pass filter: 50Hz to 800Hz\u003cbr data-start=\"4822\" data-end=\"4825\"\u003ex10 multiplier: 500Hz to 8kHz\u003cbr data-start=\"4854\" data-end=\"4857\"\u003eTHD at 4 ohms: greater than 0.01\u003cbr data-start=\"4889\" data-end=\"4892\"\u003eRecommended fuse: 200A\u003c\/p\u003e\n\u003cp data-start=\"4918\" data-end=\"5158\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you want a \u003cstrong data-start=\"4932\" data-end=\"4957\"\u003eRuthless Audio 1500.4\u003c\/strong\u003e that can handle \u003cstrong data-start=\"4974\" data-end=\"4997\"\u003eactive front stages\u003c\/strong\u003e, \u003cstrong data-start=\"4999\" data-end=\"5027\"\u003epro audio mids and highs\u003c\/strong\u003e, \u003cstrong data-start=\"5029\" data-end=\"5046\"\u003emid-bass duty\u003c\/strong\u003e, and \u003cstrong data-start=\"5052\" data-end=\"5093\"\u003eserious daily or demo speaker systems\u003c\/strong\u003e, this amp is built to do real work when the electrical is right.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Ruthless Audio","offers":[{"title":"Default Title","offer_id":43741206053004,"sku":"","price":514.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5076\/8524\/files\/image_93e192ec-d174-4ccd-bab1-221fe4dced2b.webp?v=1745089697","url":"https:\/\/audiosellerz.com\/products\/ruthless-audio-1500-4-4-channel-car-audio-amplifier","provider":"Audio Sellerz","version":"1.0","type":"link"}