{"id":8161,"date":"2025-05-27T23:16:23","date_gmt":"2025-05-27T14:16:23","guid":{"rendered":"https:\/\/aireviewirush.com\/?p=8161"},"modified":"2025-05-27T23:16:23","modified_gmt":"2025-05-27T14:16:23","slug":"da-alpha-professional-assessment-headfonia","status":"publish","type":"post","link":"https:\/\/aireviewirush.com\/?p=8161","title":{"rendered":"D&#038;A Alpha Professional Assessment &#8211; Headfonia"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div>\n<p><span style=\"font-weight: 400;\">On this evaluation, I\u2019m taking the D&amp;A Alpha Professional desktop DAC\/AMP for a spin. The unit prices $699 USD and may be purchased from Shenzhen Audio.<\/span><\/p>\n<p>\u00a0<\/p>\n<p><em><span style=\"font-weight: 400;\">Disclaimer: Neither D&amp;A nor Shenzhen Audio is expounded to Headfonia. They despatched me the Alpha Professional to be featured and reviewed on Headfonia.com.<\/span><\/em><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_53 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6a2c75755cff7\" ><span class=\"\"><span style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6a2c75755cff7\"  type=\"checkbox\" id=\"item-6a2c75755cff7\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/aireviewirush.com\/?p=8161\/#D_A\" title=\"D&amp;A\">D&amp;A<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/aireviewirush.com\/?p=8161\/#D_A_Alpha_Professional\" title=\"D&amp;A Alpha Professional\">D&amp;A Alpha Professional<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/aireviewirush.com\/?p=8161\/#Options\" title=\"Options\">Options<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/aireviewirush.com\/?p=8161\/#Design_Construct_Haptics\" title=\"Design, Construct &amp; Haptics\">Design, Construct &amp; Haptics<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"D_A\"><\/span><span style=\"font-weight: 400;\">D&amp;A<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The audio model <a href=\"https:\/\/apos.audio\/products\/d-a-alpha-pro-hi-res-dac-headphone-amp\" target=\"_blank\" rel=\"noopener\">D&amp;A<\/a> was based in 2024, but it surely solely appeared to the broader public in 2025. Not a lot is thought in regards to the firm apart from that its enigmatic identify stands for \u201cDIGI&amp;AESTH\u201d. It\u2019s stated of their PR copy that they specialise in high-end audio gear, significantly in digital-to-analog converters.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Because the second half of the model identify implies, D&amp;A pays particular consideration to the looks of its gear, and its core philosophy is \u201cFuture Design,\u201d which \u201charmoniously fuses modernist aesthetics with classic parts\u201d. That is evident of their first product, which stands out from the same old anodized aluminum bunch I\u2019m used to seeing from Topping and SMSL.<\/span><\/p>\n<p><a href=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-6.jpg\" target=\"_blank\" rel=\"noopener\"><img data-od-added-loading=\"\" data-od-replaced-sizes=\"(max-width: 690px) 100vw, 690px\" src=\"\/HTML\/BODY\/DIV[@id='outer-wrap']\/*[1][self::DIV]\/*[3][self::SECTION]\/*[1][self::ARTICLE]\/*[3][self::DIV]\/*[1][self::DIV]\/*[1][self::DIV]\/*[2][self::DIV]\/*[7][self::P]\/*[1][self::A]\/*[1][self::IMG]\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-157661\" alt=\"D&amp;A Alpha Pro\" width=\"690\" height=\"460\" srcset=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-6.jpg 690w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-6-250x167.jpg 250w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-6-600x400.jpg 600w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-6-296x197.jpg 296w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\"\/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"D_A_Alpha_Professional\"><\/span><span style=\"font-weight: 400;\">D&amp;A Alpha Professional<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">On paper, the <a href=\"https:\/\/shenzhenaudio.com\/products\/d-a-alpha-pro-es9039mspro-desktop-dac-headphone-amplifier\" target=\"_blank\" rel=\"noopener\">D&amp;A Alpha Professional<\/a> doesn\u2019t stand out a lot from the same old measurement-centric designs I\u2019m used to seeing from the same old Chinese language audio electronics manufacturers we all know and love. After truly seeing the unit within the advertising and marketing supplies, I used to be stunned that D&amp;A have truly made the Alpha Professional stand out by way of appears to be like.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The Alpha Professional additionally does a few attention-grabbing issues beneath the hood. Whereas the DAC itself is an ES9039MS Professional single-chip affair with fairly well-performing, if a bit pedestrian, OPA1612 outputs, the clocking system has been improved. D&amp;A declare {that a} second PLL circuit is used to scrub up the inputs of any jitter. Galvanic isolation is absent, but it surely\u2019s not usually we get it at this value level.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the subject of powering the factor, D&amp;A have gone with the trusted twin SMPSU modules, which give working voltages that then get regulated all the way down to what\u2019s wanted by the digital and analog circuits. The cherry on the facility provide cake is the truth that there\u2019s no less than one discrete linear provide, which is often reserved for a lot higher-tier items.<\/span><\/p>\n<p><a href=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-1.jpg\" target=\"_blank\" rel=\"noopener\"><img data-od-added-loading=\"\" data-od-replaced-sizes=\"(max-width: 690px) 100vw, 690px\" src=\"\/HTML\/BODY\/DIV[@id='outer-wrap']\/*[1][self::DIV]\/*[3][self::SECTION]\/*[1][self::ARTICLE]\/*[3][self::DIV]\/*[1][self::DIV]\/*[1][self::DIV]\/*[2][self::DIV]\/*[12][self::P]\/*[1][self::A]\/*[1][self::IMG]\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-157657\" alt=\"D&amp;A Alpha Pro\" width=\"690\" height=\"460\" srcset=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-1.jpg 690w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-1-250x167.jpg 250w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-1-600x400.jpg 600w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-1-296x197.jpg 296w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\"\/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">Judging by the absence of a distant and show, the Alpha Professional is supposed for desktops. It may be used as a standalone all-in-one or perhaps a devoted DAC and analog pre-amp. The DAC quantity management is left alone in favor of analog attenuation. A NJU73215 chip makes use of a precision resistor array to show the amount down and is managed by an actual potentiometer for that buttery knob-feel.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Options\"><\/span><span style=\"font-weight: 400; font-size: 16pt;\">Options<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">DAC \u2013 ES9039MS Professional, OPA1612 outputs<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Amplifier \u2013 discrete class-AB, 4-channel balanced<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Quantity management \u2013 NJU72315 chip-based<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Inputs: Bluetooth 5.4, USB-C, Toslink, SPDIF, RCA<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Outputs: 4-pin XLR, 4.4mm, 3.5mm SE, RCA, and XLR for line-out<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Bluetooth codecs: aptX Adaptive, aptX, LDAC, LHDC\/HWA, AAC, SBC<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">PCM knowledge fee: as much as 32-bit 768 kHz<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">DSD knowledge fee: as much as Native DSD512<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">SNR: XLR -133dBA (practically immeasurable), RCA \u2013 128dB, HP out \u2013 125dB.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">THD+N: XLR -0.00006% (practically immeasurable), RCA \u2013 0.00007%, HP out \u2013 0.0001%<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Max output energy: 4W@16ohms, 6W@32ohms, 1.4W@150ohms, 700mW@300ohms, 350mW@600ohms<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Line-out voltage: XLR \u2013 5.2Vrms, RCA \u2013 2.5Vrms<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Output impedance: close to 0\u03a9 headphone-out; 100\u03a9 line-out<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Energy draw: &lt;50W<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Dimensions: 225 x 199 x 55mm<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Weight: 1.76kg<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-8.jpg\" target=\"_blank\" rel=\"noopener\"><img src=\"\/HTML\/BODY\/DIV[@id='outer-wrap']\/*[1][self::DIV]\/*[3][self::SECTION]\/*[1][self::ARTICLE]\/*[3][self::DIV]\/*[1][self::DIV]\/*[1][self::DIV]\/*[2][self::DIV]\/*[16][self::P]\/*[1][self::A]\/*[1][self::IMG]\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-157663\" alt=\"D&amp;A Alpha Pro\" width=\"690\" height=\"460\" srcset=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-8.jpg 690w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-8-250x167.jpg 250w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-8-600x400.jpg 600w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-8-296x197.jpg 296w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\"\/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Design_Construct_Haptics\"><\/span><span style=\"font-weight: 400; font-size: 16pt;\">Design, Construct &amp; Haptics<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Even earlier than turning the Alpha Professional on, the very first thing that got here to thoughts was that I\u2019ve seen this design language someplace earlier than. Uncooked aluminium, glass, vivid LEDs \u2013 that\u2019s proper, the Nothing Telephone! I\u2019m not accusing anybody of something, however the inspiration appears fairly clear to me.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Upon turning the Alpha Professional on, it lights up like a Christmas tree with LEDs galore. There\u2019s the same old like indicator lights for energy, achieve degree, output, and enter. The amount knob additionally has a hoop LED round it which signifies the present quantity degree. It additionally has an opaque white plastic line that reveals the amount place with out the lights on. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">It\u2019s useful as a result of the amount management makes use of a potentiometer as a substitute of an encoder.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The LED scheme has three modes that may be toggled by short-pressing the facility button. First, there\u2019s the grumpy outdated man mode, which solely retains the naked minimal lit \u2013 indicators and the amount knob, when you flip it. I\u2019ll admit that it\u2019s the one I stored to for many of my listening.<\/span><\/p>\n<p><a href=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-7.jpg\" target=\"_blank\" rel=\"noopener\"><img src=\"\/HTML\/BODY\/DIV[@id='outer-wrap']\/*[1][self::DIV]\/*[3][self::SECTION]\/*[1][self::ARTICLE]\/*[3][self::DIV]\/*[1][self::DIV]\/*[1][self::DIV]\/*[2][self::DIV]\/*[22][self::P]\/*[1][self::A]\/*[1][self::IMG]\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-157662\" alt=\"D&amp;A Alpha Pro\" width=\"690\" height=\"460\" srcset=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-7.jpg 690w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-7-250x167.jpg 250w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-7-600x400.jpg 600w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-7-296x197.jpg 296w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\"\/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">Urgent the facility button toggles a \u201crespiration\u201d LED mode the place they progressively change their brightness. It\u2019s a enjoyable gimmick, however I may actually inform the decrease brightness has fairly noticeable PWM flicker. The following mode has essentially the most potential because it makes the bar LEDs gentle up like VU meters relying on how loud the sign is. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sadly, it doesn\u2019t work too nicely because the enter is just too delicate, so that they keep at max for more often than not.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The final LED mode is simply all the pieces on with no flickering. At first, it wowed me, and I assumed that some avid gamers may recognize it, however with time, it proved to be too distracting. There\u2019s no technique to change LED brightness, so that they\u2019re at full blast on a regular basis. In the event you\u2019re one of many individuals who put tape on the indicator LEDs, this isn&#8217;t a product for you.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In on a regular basis use, the Alpha Professional is sort of neat because it doesn\u2019t depend on a show to point out the related data. Certain, it\u2019s extra restricted as you possibly can\u2019t toggle by a dozen output filter choices, however I all the time desire buttons to limitless menus. One factor, it&#8217;s essential memorize the indicator positions as a result of the LEDs are so vivid, it\u2019s fairly exhausting to make out the label that\u2019s subsequent to them, even throughout the day.<\/span><\/p>\n<p><a href=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-9.jpg\" target=\"_blank\" rel=\"noopener\"><img src=\"\/HTML\/BODY\/DIV[@id='outer-wrap']\/*[1][self::DIV]\/*[3][self::SECTION]\/*[1][self::ARTICLE]\/*[3][self::DIV]\/*[1][self::DIV]\/*[1][self::DIV]\/*[2][self::DIV]\/*[27][self::P]\/*[1][self::A]\/*[1][self::IMG]\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-157664\" alt=\"D&amp;A Alpha Pro\" width=\"690\" height=\"460\" srcset=\"https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-9.jpg 690w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-9-250x167.jpg 250w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-9-600x400.jpg 600w, https:\/\/www.headfonia.com\/wp-content\/uploads\/2025\/05\/DA-Alpha-Pro-9-296x197.jpg 296w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\"\/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">The entire buttons are good to make use of and have a reassuring click on as soon as pressed. The amount management is a pleasing shock within the age of encoders. It makes use of a correct potentiometer to alter the amount, which in flip controls a devoted chip-based attenuator. The entire connectors are good high quality, even when the XLRs are made by Zwee as a substitute of Neutrik. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">As all the time, I&#8217;ve to complain that the SPDIF enter is utilizing RCA as a substitute of BNC<\/span><\/p>\n<p><em><strong>The half on sound continues on the second web page. 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The unit prices $699 USD and may be purchased from Shenzhen Audio. \u00a0 Disclaimer: Neither D&amp;A nor Shenzhen Audio is expounded to Headfonia. They despatched me the Alpha Professional to be featured and reviewed on Headfonia.com. D&amp;A The audio model D&amp;A [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8163,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-8161","post","type-post","status-publish","format-standard","has-post-thumbnail","category-audio-devices"],"_links":{"self":[{"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/posts\/8161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8161"}],"version-history":[{"count":1,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/posts\/8161\/revisions"}],"predecessor-version":[{"id":8162,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/posts\/8161\/revisions\/8162"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=\/wp\/v2\/media\/8163"}],"wp:attachment":[{"href":"https:\/\/aireviewirush.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aireviewirush.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}