{"id":418516,"date":"2022-03-19T16:00:54","date_gmt":"2022-03-19T13:00:54","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/"},"modified":"2022-03-19T16:00:54","modified_gmt":"2022-03-19T13:00:54","slug":"what-is-a-class-d-amplifier-and-what-are-they-useful-for","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/","title":{"rendered":"#What Is a Class-D Amplifier, and What Are They Useful For?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3bc19f075c7\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3bc19f075c7\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/#%E2%80%9CWhat_Is_a_Class-D_Amplifier_and_What_Are_They_Useful_For%E2%80%9D\" >&#8220;What Is a Class-D Amplifier, and What Are They Useful For?&#8221;<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/#An_Introduction_to_Amplification\" >An Introduction to Amplification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/#How_Class_D_Amplifiers_Work\" >How Class D Amplifiers Work<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/#What_Makes_Class_D_Amplifiers_Special\" >What Makes Class D Amplifiers Special?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/#Common_Uses_of_Class_D_Amplifiers\" >Common Uses of Class D Amplifiers<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CWhat_Is_a_Class-D_Amplifier_and_What_Are_They_Useful_For%E2%80%9D\"><\/span>&#8220;What Is a Class-D Amplifier, and What Are They Useful For?&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<figure style=\"width: 1200px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"type:primaryImage size-full wp-image-792376\" data-pagespeed-lazy-srcset=\"https:\/\/www.howtogeek.com\/wp-content\/uploads\/2022\/03\/class-d-amplifier.jpg?width=398&amp;trim=1,1&amp;bg-color=000&amp;pad=1,1 400w, https:\/\/www.howtogeek.com\/wp-content\/uploads\/2022\/03\/class-d-amplifier.jpg?width=1198&amp;trim=1,1&amp;bg-color=000&amp;pad=1,1 1200w\" sizes=\"auto, 400w, 1200w\" data-pagespeed-lazy-src=\"https:\/\/www.howtogeek.com\/wp-content\/uploads\/2022\/03\/class-d-amplifier.jpg?width=1198&amp;trim=1,1&amp;bg-color=000&amp;pad=1,1\" alt=\"A Class D stereo amplifier unit on a white background.\" width=\"1200\" height=\"675\" src=\"\/pagespeed_static\/1.JiBnMqyl6S.gif\" onload=\"pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\" onerror=\"this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\"\/><figcaption class=\"wp-caption-text\"><span class=\"type:primaryImage imagecredit\"><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.shutterstock.com\/image-photo\/stereo-amplifier-class-d-on-white-1186725253\">JV Korotkova\/Shutterstock.com<\/a><\/span><\/figcaption><\/figure>\n<p>If you\u2019ve been shopping for home theater components, you might have seen class-D amplifiers mentioned. But what are they, and what are they good for? Let\u2019s take a deeper dive into these highly efficient wonders.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"An_Introduction_to_Amplification\"><\/span>An Introduction to Amplification<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>At the most basic level, a traditional amplifier is a signal booster. Give it an input signal, and it uses electricity and various gain stages to increase the amplitude until you end up with a much higher signal than the one that came in. The end result: a louder signal than the input signal.<\/p>\n<p>There are multiple types of amplifiers like class A, class B, and class AB. Classes A and B have their own benefits and drawbacks, while class AB amplifiers combine elements of each to maximize the benefits and minimize the disadvantages of each. For years, the vast majority of consumer electronics like A\/V receivers and home theater systems have used class AB amplifiers.<\/p>\n<p>Why are we spending so much time talking about other amplifiers if this article is about class-D amplifiers? Because they work very differently.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"How_Class_D_Amplifiers_Work\"><\/span>How Class D Amplifiers Work<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A class-D amplifier is also known as a switching amplifier. Instead of boosting the input signal via linear gain stages, a class-D amplifier uses a concept known as pulse width modulation.<\/p>\n<p>This is a complicated subject, but this converts the input signal into pulses. The output stage then switches back and forth at a high frequency, corresponding to the pulses that the signal was converted into. This amplified signal is then processed and run through a low-pass filter to return it to the original waveform and remove high-frequency noise.<\/p>\n<p>This conversion to and from another type of signal is somewhat similar to how digital-to-analog and back conversion works, but this is far less complex. That said, the process (likely combined with the \u201cD\u201d in class-d) leads to people sometimes mistakenly referring to class-D amplifiers as \u201cdigital\u201d amplifiers.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"What_Makes_Class_D_Amplifiers_Special\"><\/span>What Makes Class D Amplifiers Special?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Because the pulse width modulation lets amplification h<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>en at much higher frequencies than normal, class-D amplifiers require much smaller power transformers than class AB amplifiers. That means you can pack much more amplification into a smaller space.<\/p>\n<p>These amplifiers are highly efficient, producing more volume using less power. Class-D amplifiers frequently have maximum possible efficiency values of 90 percent or more, while class AB amplifiers rarely go higher than 60 percent efficiency.<\/p>\n<p>Of course, class-D amplifiers aren\u2019t perfect. Because of the low-pass filter, which is meant to filter out unpleasant noise, the high end can suffer, so these aren\u2019t great for audiophile use. Some class-D amplifiers can also exhibit distortion, and some people, audiophiles in particular, just aren\u2019t fans of the sound of these amplifiers in <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/general\/\" data-internallinksmanager029f6b8e52c=\"3\" title=\"General\" target=\"_blank\" rel=\"noopener\">general<\/a>.<\/p>\n<p>Even with the downsides, that combination of high efficiency and small size makes class-D amplifiers perfect for certain applications.<\/p>\n<h2 role=\"heading\" aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Common_Uses_of_Class_D_Amplifiers\"><\/span>Common Uses of Class D Amplifiers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As you might imagine, class-D amplifiers are a great option for any audio project where size and power efficiency\u2014think battery life\u2014are important. Because of this, you\u2019ll often see class-D amplifiers employed inside Bluetooth speakers.<\/p>\n<p>Bluetooth headphones are also a good candidate for class-D amplifiers, though because the volume requirements are fairly low, other types of amplifiers work for this particular case as well. You\u2019ll also find class D amplifiers in many other products, including portable headphone amplifiers and even stereo amplifiers.<\/p>\n<figure style=\"width: 700px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-783441 size-full\" data-pagespeed-lazy-src=\"https:\/\/www.howtogeek.com\/wp-content\/uploads\/2022\/02\/home-theater-wiring-subwoofer.jpg?trim=1,1&amp;bg-color=000&amp;pad=1,1\" alt=\"Subwoofer connections on A\/V receiver\" width=\"700\" height=\"335\" data-credittext=\"Kris Wouk\" src=\"\/pagespeed_static\/1.JiBnMqyl6S.gif\" onload=\"pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\" onerror=\"this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\"\/><figcaption class=\"wp-caption-text\"><span class=\"imagecredit\">Kris Wouk<\/span><\/figcaption><\/figure>\n<p>One major area where class-D amplifiers are frequently used is subwoofers. Looking at the pros and cons of class-D amplifiers, it almost seems as if they were created for subwoofers. This is because the audio issues essentially disappear when the amp is only used for bass frequencies, and the small size and efficiency let you pack massive power into a subwoofer.<\/p>\n<p>Take a look at our list of the best subwoofers you can buy, and if it\u2019s powered, there is a good chance that subwoofer is using a class-D amplifier.<\/p>\n<\/div>\n<p><script>\n setTimeout(function(){\n  !function(f,b,e,v,n,t,s)\n  {if(f.fbq)return;n=f.fbq=function(){n.callMethod?\n  n.callMethod.apply(n,arguments):n.queue.push(arguments)};\n  if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';\n  n.queue=[];t=b.createElement(e);t.async=!0;\n  t.src=v;s=b.getElementsByTagName(e)[0];\n  s.parentNode.insertBefore(t,s) } (window, document,'script',\n  'https:\/\/connect.facebook.net\/en_US\/fbevents.js');\n   fbq('init', '335401813750447');\n   fbq('track', 'PageView');\n  },3000);\n<\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more like this article, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/technology\/\" target=\"_blank\" rel=\"noopener\">Technology category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/www.howtogeek.com\/792135\/what-is-a-class-d-amplifier-and-what-are-they-useful-for\/\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;What Is a Class-D Amplifier, and What Are They Useful For?&#8221; JV Korotkova\/Shutterstock.com If you\u2019ve been shopping for home theater components, you might have seen class-D amplifiers mentioned. But what are they, and what are they good for? Let\u2019s take a deeper dive into these highly efficient wonders. An Introduction to Amplification At the most&#8230;<\/p>\n","protected":false},"author":1,"featured_media":418517,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/www.howtogeek.com\/wp-content\/uploads\/2022\/03\/class-d-amplifier.jpg?height=200p&trim=2,2,2,2","fifu_image_alt":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-418516","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/418516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=418516"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/418516\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/418517"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=418516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=418516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=418516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}