{"id":150087,"date":"2022-10-20T16:01:45","date_gmt":"2022-10-20T15:01:45","guid":{"rendered":"https:\/\/www.techweekmag.com\/?p=150087"},"modified":"2022-10-20T16:01:45","modified_gmt":"2022-10-20T15:01:45","slug":"conrad-johnson-art88-reference-tube-preamplifier","status":"publish","type":"post","link":"https:\/\/www.stereoindex.com\/tech\/hi-fi\/conrad-johnson-art88-reference-tube-preamplifier\/","title":{"rendered":"Conrad-Johnson ART88: Reference tube preamplifier"},"content":{"rendered":"<p><b>Conrad-Johnson Design<\/b>\u00a0celebrated its 45th anniversary with the release of the\u00a0<b>ART88<\/b>\u00a0reference preamplifier .\u00a0This is a limited edition of only 250 produced.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/10\/172_techweek.jpg\" alt=\"Image\" \/><\/p>\n<p>The Conrad-Johnson ART88 preamplifier is a \u201cdual mono\u201d concept &#8211; that is, the two amplification channels are completely separated and share only a common power transformer and cabinet.\u00a0In keeping with the company's philosophy, a component's reference sound quality is determined by minimalist circuitry combined with the highest quality components used.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/10\/173_techweek.jpg\" alt=\"Image\" \/><\/p>\n<p>Each channel has an amplifier stage built on the parallel sections of a PCC88 double triode, connected to the output through a buffer stage built on a second PCC88 tube, which allows to achieve a low output impedance.\u00a0Each channel is powered by an independent DC power supply with a discrete voltage regulator.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/10\/174_techweek.jpg\" alt=\"Image\" \/><\/p>\n<p>The Conrad-Johnson ART88 preamp uses only the highest quality components such as CJD Teflon capacitors and Vishay metal film resistors.\u00a0Switch connectors are made of oxygen-free copper and plated with rhodium-plated silver.\u00a0The gain controls and signal circuits are mounted on separate boards, and the amplifier housing is made of thick aluminum panels to minimize microphonic effects.<\/p>\n<p>The preamp has already gone on sale in the US for $<b>28.000<\/b><\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/10\/175_techweek.jpg\" alt=\"Image\" \/><\/p>\n<p><b><\/b><b>Conrad- Johnson\u00a0<\/b><b>ART88\u00a0<\/b><b>preamp\u00a0<\/b><b>specifications:<\/b><b><\/b><b><\/b><\/p>\n<ul>\n<li><b>Gain level:<\/b>\u00a025 dB<\/li>\n<li><b>Maximum output voltage level:<\/b>\u00a010Vrms<\/li>\n<li><b>Output impedance:<\/b>\u00a0190 ohm<\/li>\n<li><b>THD:<\/b>\u00a0less than 0.25% at 1.0V<\/li>\n<li>Frequency response: 2 Hz to over 100 kHz<\/li>\n<li><b>Hum and noise:<\/b>\u00a0&lt;50uV<\/li>\n<li><b>Lamp kit:<\/b>\u00a04 x PCC88<\/li>\n<li><b>Dimensions:<\/b>\u00a047.6 x 13.8 x 40.6 cm<\/li>\n<li><b>Weight:<\/b>\u00a015 kg<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<!-- FeedbackWP Plugin --><div        class=\"rmp-widgets-container rmp-wp-plugin rmp-main-container js-rmp-widgets-container js-rmp-widgets-container--150087 \"        data-post-id=\"150087\">        <!-- Rating widget -->    <div class=\"rmp-rating-widget js-rmp-rating-widget\" role=\"group\" aria-labelledby=\"rmp-title-150087\">                    <p class=\"rmp-heading rmp-heading--title\" id=\"rmp-title-150087\">                Rate this product            <\/p>                        <div class=\"rmp-rating-widget__icons\">            <ul class=\"rmp-rating-widget__icons-list js-rmp-rating-icons-list\" role=\"radiogroup\" aria-label=\"Rating from 1 to 5\">                                                        <li                            class=\"rmp-rating-widget__icons-list__icon 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The Conrad-Johnson ART88 preamplifier is a \u201cdual mono\u201d concept &#8211; that is, the two amplification channels are completely separated and share only a common power transformer and cabinet.\u00a0In keeping with the company&#8217;s philosophy, a component&#8217;s [&hellip;] <a class=\"g1-link g1-link-more\" href=\"https:\/\/www.stereoindex.com\/tech\/hi-fi\/conrad-johnson-art88-reference-tube-preamplifier\/\">More<\/a><\/p>\n","protected":false},"author":10404,"featured_media":150088,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[642],"tags":[779],"adace-sponsor":[],"class_list":["post-150087","post","type-post","status-publish","format-standard","has-post-thumbnail","category-hi-fi","tag-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/150087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/users\/10404"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/comments?post=150087"}],"version-history":[{"count":0,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/150087\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media\/150088"}],"wp:attachment":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media?parent=150087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/categories?post=150087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/tags?post=150087"},{"taxonomy":"adace-sponsor","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/adace-sponsor?post=150087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}