{"version":"1.0","provider_name":"diyparadise","provider_url":"https:\/\/diyparadise.com\/w","title":"Mr. Chang DIY Extraordinaire - diyparadise","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"093BHs9pYz\"><a href=\"https:\/\/diyparadise.com\/w\/mr-chang-diy-extraordinaire\/\">Mr. Chang DIY Extraordinaire<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/diyparadise.com\/w\/mr-chang-diy-extraordinaire\/embed\/#?secret=093BHs9pYz\" width=\"600\" height=\"338\" title=\"&#8220;Mr. Chang DIY Extraordinaire&#8221; &#8212; diyparadise\" data-secret=\"093BHs9pYz\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/diyparadise.com\/w\/wp-content\/uploads\/2008\/06\/chang_st70.jpg","thumbnail_width":1024,"thumbnail_height":768,"description":"Mr. Chang DIY Extraordinaire &nbsp; It&#8217;s not very often that I meet a DIY extraordinaire like Mr. Chang here. His work puts many commercial amps to shame&#8230; \u00a0\u00a0\u00a0\u00a0 This is a tube preamp based on a Sansui circuit. It has phono functions in addition to tone controls, loudness switch etc. Beautiful eh? If you click on the picture, you&#8217;ll be rewarded with a better view. Check out the silkscreen&#8230;\u00a0 &nbsp; \u00a0\u00a0\u00a0\u00a0 Aha! A Dynaco ST70 clone! A switch in front allows the user to select between different driver tubes, as used in different generations of ST70. The voltage and current"}