{"id":1268,"date":"2021-02-09T16:33:37","date_gmt":"2021-02-09T16:33:37","guid":{"rendered":"https:\/\/bywaudio.com\/?post_type=product&#038;p=1268"},"modified":"2026-08-08T01:19:00","modified_gmt":"2026-08-08T01:19:00","slug":"red-dot-sl-2520-vintage-scott-liebers","status":"publish","type":"product","link":"https:\/\/bywaudio.com\/index.php\/product\/red-dot-sl-2520-vintage-scott-liebers\/","title":{"rendered":"Red Dot SL-2520  vintage Scott Liebers"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>A high-fidelity op-amp with a smooth character.<\/p>\n<p>Scott Liebers originally designed two unique versions of the SL-2520 as replacement opamps for vintage console restoration. The vintage or &#8220;red dot&#8221; version is built to match the Huntington and Melville NY opamps from the 70&#8217;s. The clean, or &#8220;blue dot&#8221; version, is made to sound like the newer, current production 2520 opamps. <\/p>\n<p>Scott&#8217;s original intent for making two versions was to use the colored vintage opamps, in console mic pres, and the cleaner versions in the summing amps of vintage consoles. <\/p>\n<p>Since then, many SL-2520&#8217;s have found their way into numerous DIY projects, EQ&#8217;s and even newer Legacy consoles. A great number of SL-2520&#8217;s are in use everyday in major market studio consoles including Nashville and New York. <\/p>\n<p>Some customers have mixed 2 clean channels and 2 colored channels in multiple channel mic-pre&#8217;s to take advantage of different sonic characteristics within the same mic-pre circuitry. <\/p>\n<p>The SL-2520&#8217;s utilize the same circuit as the highly desirable vintage opamps from the 70&#8217;s but with modern components. (The original transistors are no longer manufactured) Modern transistors are generally quieter and faster than their vintage counterparts. <\/p>\n<p>Through exhaustive lab and listening tests, Scott was able to match the distortion characteristics of the vintage and modern opamps to achieve a sound that has been deemed &#8220;indistinguishable&#8221; from the originals by vintage console owners.<\/p>\n<p>SL-2520&#8217;s are purposely unpotted for better heat dissipation and to allow repairs if ever needed.<\/p>\n","protected":false},"featured_media":1246,"template":"","meta":{"_acf_changed":false},"product_cat":[53],"product_tag":[],"class_list":["post-1268","product","type-product","status-publish","has-post-thumbnail","product_cat-op-amps","product_shipping_class-opamps","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/product\/1268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/media\/1246"}],"wp:attachment":[{"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/media?parent=1268"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=1268"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/bywaudio.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=1268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}