{"product_id":"soundstream-st4-1200d","title":"Soundstream ST4.1200D | Stealth Class D 4-Channel Amplifier - High-Efficiency, Compact, and Easy to Install","description":"\u003cp\u003eSoundstream ST4.1200D is a car audio amplifier for an aftermarket vehicle audio installation. Match the specifications, connections and mounting requirements below to your system before ordering.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Soundstream\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: ST4.1200D\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMax Power: 1,000 Watts\u003c\/li\u003e\n\u003cli\u003eRMS Power 4Ω: 100W x 4\u003c\/li\u003e\n\u003cli\u003eRMS Power 2Ω: 150W x 4\u003c\/li\u003e\n\u003cli\u003eAmplifier Size: 3″W x 1.50″H x 7.75″L\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFeatures and installation details\u003c\/h2\u003e\u003ch2\u003e\n\u003cstrong\u003eStealth Series 4Ch \u003c\/strong\u003e\u003cstrong\u003eMicro-Amp\u003c\/strong\u003e\n\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Power\u003c\/td\u003e\n\u003ctd\u003e 1,000 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power 4Ω\u003c\/td\u003e\n\u003ctd\u003e 100W x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power 2Ω\u003c\/td\u003e\n\u003ctd\u003e 150W x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Size\u003c\/td\u003e\n\u003ctd\u003e 3″W x 1.50″H x 7.75″L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\n      \n  \n    \u003cp\u003eThe Soundstream Stealth Series ST4.1200D amplifiers may be small in size, but don’t let their compact design fool you. These little monsters pack an incredible punch, thanks to Class D full-range technology. With the latest advancements in Class D amplification, the ST4.1200D delivers high power in a less than 2-pound chassis, offering you more power than you'd expect from such a compact device.\u003c\/p\u003e\n\n\u003ch2\u003eSmall in Size, Big on Performance\u003c\/h2\u003e\n\n\u003cp\u003eThe ST4.1200D is designed with Class D technology, a revolutionary advancement that was once considered \"dirty power\" but has now become a benchmark for stability and efficiency. With high power capability, maximum efficiency, and low tolerance components, Class D amplifiers have surpassed traditional full-range amplifiers in delivering reliable, clean sound. The ST4.1200D provides stable and consistent performance, even when driving high-demand car audio systems, subwoofers, or speakers.\u003c\/p\u003e\n\n\u003cp\u003eDespite its small size, this amplifier delivers an impressive 1200W of power, making it ideal for car audio systems, motorcycle setups, boat systems, and off-road vehicles. Its ultra-micro footprint ensures it can fit in tight spaces, while its unbelievable sound quality brings an extra dimension to your audio setup, whether you're cruising down the highway, tearing through the trails, or sailing on the water.\u003c\/p\u003e\n\n\u003ch2\u003eMaximum Efficiency and Minimal Power Requirements\u003c\/h2\u003e\n\n\u003cp\u003eThe ST4.1200D amplifier operates with minimal power requirements, meaning it uses less energy to produce more sound. This efficiency not only helps with power conservation but also reduces heat, ensuring long-lasting, reliable performance. The low-profile design of the amplifier helps with installation, and its compact size makes it a perfect choice for custom audio builds or vehicle systems where space is limited.\u003c\/p\u003e\n\n\u003ch2\u003ePerfect for Custom Installations\u003c\/h2\u003e\n\n\u003cp\u003eThe Soundstream Stealth Amplifier is incredibly versatile, making it a great choice for various audio systems. Whether you're upgrading your factory-installed stereo or building a custom setup, the ST4.1200D offers easy installation. Its compact design allows it to fit seamlessly into most spaces in vehicles, boats, motorcycles, or off-road setups, ensuring you don’t have to sacrifice performance for size.\u003c\/p\u003e\n\n\u003cp\u003eThe automatic hi-level signal sensing turn-on feature eliminates the need to run a remote wire turn-on. The amplifier detects the audio signal from your head unit and automatically powers on and off, making it perfect for systems using factory radios or OEM installations. This means you don’t have to worry about complex wiring or additional connections—just plug it in and enjoy powerful audio.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features of the Soundstream Stealth ST4.1200D:\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1200W of Power:\u003c\/strong\u003e Compact design delivers impressive output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass D Full-Range Technology:\u003c\/strong\u003e High efficiency with low power consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Hi-Level Signal Sensing Turn-On:\u003c\/strong\u003e No need for a remote wire—automatically turns on when it detects an audio signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design:\u003c\/strong\u003e Fits easily in space-constrained installations without sacrificing performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Performance:\u003c\/strong\u003e Delivers clean, distortion-free sound even under high power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Ideal for car audio systems, motorcycle setups, boat audio systems, and off-road vehicle audio installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Simplified setup with RCA and hi-level inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Profile, High-Efficiency Design:\u003c\/strong\u003e Minimal power requirements and reduced heat for long-lasting performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003ch2\u003eBuilt for Any Audio Setup\u003c\/h2\u003e\n\n\u003cp\u003eWhether you’re a car audio enthusiast or looking to upgrade your motorcycle, boat, or off-road audio system, the Soundstream Stealth ST4.1200D amplifier is designed to deliver exceptional sound across a variety of applications. It’s perfect for people who need reliable power in a compact form without compromising on sound quality.\u003c\/p\u003e\n\n\u003ch2\u003eIn Summary:\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e1200W Class D 4-Channel Amplifier designed for compact, high-efficiency audio setups.\u003c\/li\u003e\n\u003cli\u003eAutomatic Hi-Level Signal Sensing Turn-On for easy installation with no remote wire.\u003c\/li\u003e\n\u003cli\u003ePerfect for car audio, motorcycle setups, boat systems, and off-road vehicles.\u003c\/li\u003e\n\u003cli\u003eClass D technology offers stable performance with low heat and maximum output.\u003c\/li\u003e\n\u003cli\u003eEasy to install with hi-level input and RCA input options.\u003c\/li\u003e\n\u003cli\u003eVersatile power output suitable for various speaker and subwoofer setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n  \n\n    \n      \n  \n    \n\u003ch2\u003e\u003cstrong\u003eStealth Amplifier Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eHigh-Efficiency Class D Full-Range Amplifiers\u003c\/p\u003e\n\u003cp\u003eHybrid Aluminum Alloy Heatsink for Optimum Dissipation\u003c\/p\u003e\n\u003cp\u003e2-ohm Stereo \u0026amp; 4-ohm Bridged Full-Range Operation\u003c\/p\u003e\n\u003cp\u003eMOSFET Power Supply w\/ Audiophile Grade IRTM Transistors\u003c\/p\u003e\n\u003cp\u003eMilitary Grade SMT PCB Maintains Dynamic Performance\u003c\/p\u003e\n\u003cp\u003eDirect Short, Thermal, \u0026amp; Overload Circuits Protect Amplifier\u003c\/p\u003e\n\u003cp\u003e200mV-12V High Level or Low-Level RCA Input\u003c\/p\u003e\n\u003cp\u003eAutomatic Turn-On Hi-Level Signal Sensing\u003c\/p\u003e\n\u003cp\u003eQuick Disconnect RCA\/High-Level Wire Harness\u003c\/p\u003e\n\u003cp\u003eQuick Disconnect Power and Speaker Output Harness\u003c\/p\u003e\n\u003cp\u003eVariable 12dB High Pass, Low Pass, \u0026amp; Subsonic Crossovers\u003c\/p\u003e\n\u003cp\u003eAmplifier Dimensions 3\"W x 1.5\"H x 7.75\"W\u003c\/p\u003e\n\n\n  \n\n    \n      \n  \n    \u003cp\u003e\n\n\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"https:\/\/soundstream.com\/pages\/pdf\/Stealth-Amplifiers-Owners-Manual\"\u003eStealth Amplifier Owners Manual [.PDF]\u003c\/a\u003e\u003c\/h2\u003e\n  \n\n    \u003ch2\u003eMore from Soundstream\u003c\/h2\u003e\u003cp\u003eExplore these related options. Compare specifications and vehicle fitment when choosing an alternative or planning an installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompare: \u003ca href=\"\/en-ca\/products\/soundstream-pn5-640d\"\u003eSoundstream PN5.640D | Picasso Nano 5-Channel Class D Car Amplifier - Compact, High-Efficiency with Automatic Signal Turn-On\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/products\/soundstream-rsm4-1200d\"\u003eSoundstream RSM4-1200D | Compact 4-Channel Class D Car Amplifier - High-Efficiency, Hi-Level Signal Sensing, Easy Install\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/products\/soundstream-st4-1000d\"\u003eSoundstream ST4.1000D | 4-Channel Class D Stealth Micro Amplifier with High-Level Input\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Soundstream","offers":[{"title":"Default Title","offer_id":46301067575381,"sku":"ST4.1200D","price":218.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0947\/5040\/files\/ST4-1200D_01_b5f3d597-7775-46c6-aad6-19b5a5baed79.jpg?v=1791471696","url":"https:\/\/speedzone-web.com\/en-ca\/products\/soundstream-st4-1200d","provider":"Speedzone Performance LLC","version":"1.0","type":"link"}