{"id":152967,"date":"2022-12-17T09:45:35","date_gmt":"2022-12-17T09:45:35","guid":{"rendered":"https:\/\/www.techweekmag.com\/?p=152967"},"modified":"2022-12-17T09:45:35","modified_gmt":"2022-12-17T09:45:35","slug":"astell-kern-pa10-class-a-portable-headphone-amplifier","status":"publish","type":"post","link":"https:\/\/www.stereoindex.com\/tech\/hi-fi\/astell-kern-pa10-class-a-portable-headphone-amplifier\/","title":{"rendered":"Astell &#038; Kern PA10: Class A portable headphone amplifier"},"content":{"rendered":"<div class=\"news__content\" data-v-206174c4=\"\">\n<div data-v-206174c4=\"\">\n<p>Astell &amp; Kern\u00a0has released the first in its range of portable headphone amplifier\u00a0PA10\u00a0, working in class A.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/12\/4_techweek.png\" alt=\"Image\" \/>Interestingly, the amplifier is designed exclusively for working with an analog signal, there is no DAC section in it.\u00a0To connect to an external source, you can use an unbalanced input 3.5 mm or balanced 4.4 mm, headphone outputs are organized on identical jacks.\u00a0The amplifier circuit is made according to the Teraton Alpha proprietary topology, the output stages operate in class A.<\/p>\n<\/div>\n<\/div>\n<div class=\"news__content\" data-v-206174c4=\"\">\n<div data-v-206174c4=\"\"><img decoding=\"async\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/12\/techweek.webp\" alt=\"Image\" \/>The device is housed in a rugged aluminum and silicon housing measuring\u00a073 x 140 x 23.3 mm\u00a0and weighing\u00a0325 grams\u00a0.\u00a0In the upper corner is a rotary volume control.\u00a0The amplifier has a switchable gain (\u00a0Low Gain\u00a0and\u00a0High Gain\u00a0) and the output impedance does not exceed\u00a01.3 Ohm\u00a0.\u00a0The maximum output voltage level on a 4.4mm balanced jack is\u00a06.2V\u00a0.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/12\/301_techweek.jpg\" alt=\"Image\" \/><\/div>\n<div class=\"ad-inpage2 inpage-banner\" data-v-4bbac5a6=\"\" data-v-206174c4=\"\"><\/div>\n<\/div>\n<div class=\"news__content\" data-v-206174c4=\"\">\n<div data-v-206174c4=\"\">\n<p>The built-in battery has a capacity\u00a0of 4200 mAh\u00a0and provides the amplifier for\u00a012 hours\u00a0with an unbalanced connection and a volume level of 30%.<\/p>\n<p>The Astell &amp; Kern PA10\u00a0headphone amplifier\u00a0sells for US\u00a0$550\u00a0in the US market .<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.stereoindex.com\/tech\/wp-content\/uploads\/2022\/12\/302_techweek.jpg\" alt=\"Image\" \/><\/div>\n<\/div>\n<div class=\"news__content\" data-v-206174c4=\"\">\n<div data-v-206174c4=\"\">\n<h3>Specifications of the Astell&amp;Kern PA10 headphone amplifier:<\/h3>\n<ul>\n<li>Analog Inputs:\u00a03.5 mm unbalanced \/ 4.4 mm balanced<\/li>\n<li>Headphone outputs: unbalanced 3.5 mm \/ balanced 4.4 mm<\/li>\n<li>Maximum input level: 2V RMS (unbalanced input) \/ 4V RMS (balanced input)<\/li>\n<li>Output Level (Low Gain): 2.1Vrms (unbalanced input) \/ 4.2Vrms (balanced input) &#8211; no load<\/li>\n<li>Output Level (High Gain): 3.1Vrms (unbalanced input) \/ 6.2Vrms (balanced input) &#8211; no load<\/li>\n<li>Frequency Response: Low Gain \u00b10.2dB (20Hz-20kHz), High Gain \u00b10.06dB (20Hz-20kHz)<\/li>\n<li>Signal-to-Noise Ratio: Low Gain 111 dB @ 1 kHz (Unbalanced) \/ 115 dB @ 1 kHz (Balanced), High Gain &#8211; 114 dB @ 1 kHz (Unbalanced) \/ 117 dB @ 1 kHz (Balanced)<\/li>\n<li>THD: Low gain &#8211; 0.0045% @ 1kHz (single-ended) \/ 0.0015% @ 1kHz (balanced) High gain &#8211; 0.0027% @ 1kHz (single-ended) \/ 0.0013% @ 1 kHz (balanced path)<\/li>\n<li>Channel separation: -83dB @ 1kHz (unbalanced) \/ -110dB @ 1kHz (balanced)<\/li>\n<li>Output impedance: 1.1 ohm (3.5 mm unbalanced output) \/ 1.3 ohm (4.4 mm balanced output)<\/li>\n<li>Dimensions (W x H x D): 73 x 140 x 23.3 mm<\/li>\n<li>Weight:\u00a0325 g<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Astell &amp; Kern\u00a0has released the first in its range of portable headphone amplifier\u00a0PA10\u00a0, working in class A. Interestingly, the amplifier is designed exclusively for working with an analog signal, there is no DAC section in it.\u00a0To connect to an external source, you can use an unbalanced input 3.5 mm or balanced 4.4 mm, headphone outputs [&hellip;] <a class=\"g1-link g1-link-more\" href=\"https:\/\/www.stereoindex.com\/tech\/hi-fi\/astell-kern-pa10-class-a-portable-headphone-amplifier\/\">More<\/a><\/p>\n","protected":false},"author":10404,"featured_media":152968,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[642],"tags":[779],"class_list":{"0":"post-152967","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-hi-fi","8":"tag-news"},"acf":[],"aioseo_notices":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/152967","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=152967"}],"version-history":[{"count":0,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/posts\/152967\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media\/152968"}],"wp:attachment":[{"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/media?parent=152967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/categories?post=152967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stereoindex.com\/tech\/wp-json\/wp\/v2\/tags?post=152967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}