{"id":150235,"date":"2022-10-27T18:11:01","date_gmt":"2022-10-27T17:11:01","guid":{"rendered":"https:\/\/www.techweekmag.com\/?p=150235"},"modified":"2022-10-27T18:11:01","modified_gmt":"2022-10-27T17:11:01","slug":"topping-l70-balanced-headphone-amplifier-on-nfca-modules","status":"publish","type":"post","link":"https:\/\/www.stereoindex.com\/tech\/headphones\/topping-l70-balanced-headphone-amplifier-on-nfca-modules\/","title":{"rendered":"Topping L70: Balanced headphone amplifier on NFCA modules"},"content":{"rendered":"<p><b>Topping<\/b>\u00a0has\u00a0released a new headphone amplifier model\u00a0<b>L70<\/b>\u00a0, made in a symmetrical design and also capable of working as a pre-amplifier.<\/p>\n<p>The amplifying part is made using proprietary\u00a0<b>NFCA (Nested Feedback Composite Amplifier Module)<\/b>\u00a0modules , which use hybrid voltage and current amplification.\u00a0This circuit provides high output power &#8211; up to\u00a0<b>7500 mV<\/b>\u00a0into\u00a0<b>32 ohms<\/b>\u00a0&#8211; and extremely low harmonic distortion and noise.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/10\/3_techweek.\" alt=\"Image\" \/><\/p>\n<p>To connect headphones, the model has a four-pin XLR connector, a balanced 4.4 mm output and an unbalanced 6.35 mm output.\u00a0The output impedance does not exceed\u00a0<b>0.1 Ohm<\/b>\u00a0, the user can choose between two levels of gain.<\/p>\n<p><b>The Topping L70<\/b>\u00a0Headphone Amplifier\u00a0sells for\u00a0<b>$349 worldwide<\/b>\u00a0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Topping\u00a0has\u00a0released a new headphone amplifier model\u00a0L70\u00a0, made in a symmetrical design and also capable of working as a pre-amplifier. The amplifying part is made using proprietary\u00a0NFCA (Nested Feedback Composite Amplifier Module)\u00a0modules , which use hybrid voltage and current amplification.\u00a0This circuit provides high output power &#8211; up to\u00a07500 mV\u00a0into\u00a032 ohms\u00a0&#8211; and extremely low harmonic distortion and [&hellip;] <a class=\"g1-link g1-link-more\" href=\"https:\/\/www.stereoindex.com\/tech\/headphones\/topping-l70-balanced-headphone-amplifier-on-nfca-modules\/\">More<\/a><\/p>\n","protected":false},"author":10404,"featured_media":150236,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[640],"tags":[779],"class_list":{"0":"post-150235","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-headphones","8":"tag-news"},"acf":[],"aioseo_notices":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/150235","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=150235"}],"version-history":[{"count":0,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/150235\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media\/150236"}],"wp:attachment":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media?parent=150235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/categories?post=150235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/tags?post=150235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}