{"id":5362,"date":"2021-02-28T20:55:51","date_gmt":"2021-02-28T18:55:51","guid":{"rendered":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362"},"modified":"2021-03-03T15:57:25","modified_gmt":"2021-03-03T13:57:25","slug":"opamp-upgrade","status":"publish","type":"post","link":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362","title":{"rendered":"OpAmp Upgrades in CD 880&#8230;..?"},"content":{"rendered":"<p><strong>Checking THD+noise of an CD880 OpAmp upgrade to OP215. \ud83d\ude41<\/strong><\/p>\n<ul>\n<li>Red &#8211; OP215<\/li>\n<li>Blue &#8211; LM49720<\/li>\n<li>Green &#8211; NE5532<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5356 alignnone\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532.png\" alt=\"\" width=\"1904\" height=\"1096\" srcset=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532.png 1904w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-300x173.png 300w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-800x461.png 800w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-768x442.png 768w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-1536x884.png 1536w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-720x414.png 720w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-520x299.png 520w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/THDN-Ratio-OP215-LM49720-NE5532-320x184.png 320w\" sizes=\"auto, (max-width: 1904px) 100vw, 1904px\" \/><\/p>\n<p><strong>Multitone -20 dBfs OP215 vs 5532 &#8211; 20 Hz -20000 Hz<\/strong><\/p>\n<ul>\n<li>Blue &#8211; NE5532<\/li>\n<li>Red &#8211; OP215<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5358 alignnone\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532.png\" alt=\"\" width=\"1904\" height=\"1096\" srcset=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532.png 1904w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-300x173.png 300w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-800x461.png 800w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-768x442.png 768w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-1536x884.png 1536w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-720x414.png 720w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-520x299.png 520w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-320x184.png 320w\" sizes=\"auto, (max-width: 1904px) 100vw, 1904px\" \/><\/p>\n<p><strong>Multitone -20 dBfs OP215 vs 5532 &#8211; 20 Hz -20000 Hz zoom to noise floor<\/strong><\/p>\n<ul>\n<li>Blue &#8211; NE5532<\/li>\n<li>Red &#8211; OP215<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5357 alignnone\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom.png\" alt=\"\" width=\"1904\" height=\"1096\" srcset=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom.png 1904w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-300x173.png 300w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-800x461.png 800w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-768x442.png 768w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-1536x884.png 1536w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-720x414.png 720w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-520x299.png 520w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom-320x184.png 320w\" sizes=\"auto, (max-width: 1904px) 100vw, 1904px\" \/><\/p>\n<p><strong>Multitone -20 dBfs OP215 vs 5532 &#8211; 1000 Hz -20000 Hz zoom to noise floor<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5360 alignnone\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2.png\" alt=\"\" width=\"1904\" height=\"1096\" srcset=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2.png 1904w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-300x173.png 300w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-800x461.png 800w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-768x442.png 768w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-1536x884.png 1536w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-720x414.png 720w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-520x299.png 520w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/02\/FFT-Spectrum-OP215-vs-NE5532-zoom2-320x184.png 320w\" sizes=\"auto, (max-width: 1904px) 100vw, 1904px\" \/><\/p>\n<p>Tested some more<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5374 alignnone\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg\" alt=\"\" width=\"1258\" height=\"1280\" srcset=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg 1258w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-295x300.jpg 295w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-786x800.jpg 786w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-768x781.jpg 768w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-80x80.jpg 80w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-720x733.jpg 720w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-520x529.jpg 520w, https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps-320x326.jpg 320w\" sizes=\"auto, (max-width: 1258px) 100vw, 1258px\" \/><\/p>\n<p><strong>Multitone -20 dBfs 20 Hz &#8211; 22 kHz<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5372 alignnone\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/loop-22khz.gif\" alt=\"\" width=\"1904\" height=\"1035\" \/><\/p>\n<p><strong>Multitone -20 dBfs 1 kHz to 22 kHz zoom in.<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-5382\" src=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/opamps-1-22-1s.gif\" alt=\"\" width=\"1904\" height=\"1035\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Checking THD+noise of an CD880 OpAmp upgrade to OP215. \ud83d\ude41 Red &#8211; OP215 Blue &#8211; LM49720 Green &#8211; NE5532 Multitone -20 dBfs OP215 vs 5532 &#8211; 20 Hz -20000 Hz Blue &#8211; NE5532 Red&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":5374,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[73,8],"tags":[],"class_list":["post-5362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cd-880-882","category-measurement"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>OpAmp Upgrades in CD 880.....? - Bram Jacobse<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"OpAmp Upgrades in CD 880.....? - Bram Jacobse\" \/>\n<meta property=\"og:description\" content=\"Checking THD+noise of an CD880 OpAmp upgrade to OP215. \ud83d\ude41 Red &#8211; OP215 Blue &#8211; LM49720 Green &#8211; NE5532 Multitone -20 dBfs OP215 vs 5532 &#8211; 20 Hz -20000 Hz Blue &#8211; NE5532 Red&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362\" \/>\n<meta property=\"og:site_name\" content=\"Bram Jacobse\" \/>\n<meta property=\"article:published_time\" content=\"2021-02-28T18:55:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-03-03T13:57:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1258\" \/>\n\t<meta property=\"og:image:height\" content=\"1280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bram\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bram\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362\"},\"author\":{\"name\":\"Bram\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\"},\"headline\":\"OpAmp Upgrades in CD 880&#8230;..?\",\"datePublished\":\"2021-02-28T18:55:51+00:00\",\"dateModified\":\"2021-03-03T13:57:25+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362\"},\"wordCount\":88,\"publisher\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\"},\"image\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/OpAmps.jpg\",\"articleSection\":[\"CD 880 \\\/ 882\",\"Measurement\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362\",\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362\",\"name\":\"OpAmp Upgrades in CD 880.....? - Bram Jacobse\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/OpAmps.jpg\",\"datePublished\":\"2021-02-28T18:55:51+00:00\",\"dateModified\":\"2021-03-03T13:57:25+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#primaryimage\",\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/OpAmps.jpg\",\"contentUrl\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/OpAmps.jpg\",\"width\":1258,\"height\":1280},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=5362#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"OpAmp Upgrades in CD 880&#8230;..?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#website\",\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/\",\"name\":\"Bram Jacobse : Tinkering CD Players & Digital Audio\",\"description\":\"Tinkering CD Players &amp; Digital Audio\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\"},\"alternateName\":\"Bram Jacobse : Tinkering CD Players & Digital Audio\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\",\"name\":\"Bram\",\"logo\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/image\\\/\"},\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"OpAmp Upgrades in CD 880.....? - Bram Jacobse","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362","og_locale":"en_US","og_type":"article","og_title":"OpAmp Upgrades in CD 880.....? - Bram Jacobse","og_description":"Checking THD+noise of an CD880 OpAmp upgrade to OP215. \ud83d\ude41 Red &#8211; OP215 Blue &#8211; LM49720 Green &#8211; NE5532 Multitone -20 dBfs OP215 vs 5532 &#8211; 20 Hz -20000 Hz Blue &#8211; NE5532 Red&#46;&#46;&#46;","og_url":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362","og_site_name":"Bram Jacobse","article_published_time":"2021-02-28T18:55:51+00:00","article_modified_time":"2021-03-03T13:57:25+00:00","og_image":[{"width":1258,"height":1280,"url":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg","type":"image\/jpeg"}],"author":"Bram","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bram"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#article","isPartOf":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362"},"author":{"name":"Bram","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe"},"headline":"OpAmp Upgrades in CD 880&#8230;..?","datePublished":"2021-02-28T18:55:51+00:00","dateModified":"2021-03-03T13:57:25+00:00","mainEntityOfPage":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362"},"wordCount":88,"publisher":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe"},"image":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#primaryimage"},"thumbnailUrl":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg","articleSection":["CD 880 \/ 882","Measurement"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362","url":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362","name":"OpAmp Upgrades in CD 880.....? - Bram Jacobse","isPartOf":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#primaryimage"},"image":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#primaryimage"},"thumbnailUrl":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg","datePublished":"2021-02-28T18:55:51+00:00","dateModified":"2021-03-03T13:57:25+00:00","breadcrumb":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#primaryimage","url":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg","contentUrl":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2021\/03\/OpAmps.jpg","width":1258,"height":1280},{"@type":"BreadcrumbList","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=5362#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.bramjacobse.nl\/wordpress"},{"@type":"ListItem","position":2,"name":"OpAmp Upgrades in CD 880&#8230;..?"}]},{"@type":"WebSite","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#website","url":"https:\/\/www.bramjacobse.nl\/wordpress\/","name":"Bram Jacobse : Tinkering CD Players & Digital Audio","description":"Tinkering CD Players &amp; Digital Audio","publisher":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe"},"alternateName":"Bram Jacobse : Tinkering CD Players & Digital Audio","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.bramjacobse.nl\/wordpress\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe","name":"Bram","logo":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/image\/"},"url":"https:\/\/www.bramjacobse.nl\/wordpress\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5362"}],"version-history":[{"count":0,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5362\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/5374"}],"wp:attachment":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}