{"id":134633,"date":"2026-06-02T16:50:15","date_gmt":"2026-06-02T16:50:15","guid":{"rendered":"https:\/\/audioresearch.com\/new_website\/?page_id=134633"},"modified":"2026-08-21T12:08:45","modified_gmt":"2026-08-21T12:08:45","slug":"audio-research-reference-20-preamplifier","status":"publish","type":"page","link":"https:\/\/audioresearch.com\/new_website\/audio-research-reference-20-preamplifier\/","title":{"rendered":"Audio Research Reference 20 Preamplifier"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row unlock_row_content=&#8221;yes&#8221; row_height_percent=&#8221;45&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;0&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;0&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;color-xsdn&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; auto_height_device=&#8221;yes&#8221; uncode_shortcode_id=&#8221;210879&#8243; css=&#8221;.vc_custom_1780418446661{border-top-width: 1px !important;}&#8221; border_color_type=&#8221;uncode-palette&#8221; row_height_pixel=&#8221;400&#8243;][vc_column column_width_percent=&#8221;75&#8243; position_vertical=&#8221;middle&#8221; gutter_size=&#8221;2&#8243; override_padding=&#8221;yes&#8221; column_padding=&#8221;2&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; font_family=&#8221;font-156269&#8243; back_color=&#8221;color-xsdn&#8221; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;189812&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_empty_space empty_h=&#8221;2&#8243;][vc_custom_heading text_color=&#8221;color-829503&#8243; text_font=&#8221;font-156269&#8243; text_weight=&#8221;300&#8243; uncode_shortcode_id=&#8221;187969&#8243; text_color_type=&#8221;uncode-palette&#8221;]The New Reference[\/vc_custom_heading][vc_custom_heading text_color=&#8221;color-wvjs&#8221; heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;500&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;116997&#8243; text_color_type=&#8221;uncode-palette&#8221;]The Reference 20 is the culmination of a singular objective: to advance beyond the established limits of preamplifier architecture and redefine what is possible in line-stage performance.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;178791&#8243;]Developed without constraint, it represents a complete rethinking of the line-stage preamplifier. Every critical element\u2014mechanical, electrical, and material\u2014has been reconsidered in pursuit of one outcome: absolute sonic transparency. The result, in keeping with Audio Research tradition, is consistent with achievements of the SP-3 and Reference 1 before it: a new reference, not only for the Audio Research, but for the category itself.[\/vc_custom_heading][\/vc_column][vc_column column_width_percent=&#8221;100&#8243; position_vertical=&#8221;middle&#8221; align_horizontal=&#8221;align_center&#8221; gutter_size=&#8221;0&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; back_color=&#8221;color-lxmt&#8221; back_image=&#8221;134849&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;518488&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_single_image media=&#8221;131230&#8243; media_width_percent=&#8221;90&#8243; alignment=&#8221;center&#8221; uncode_shortcode_id=&#8221;172951&#8243;][\/vc_column][\/vc_row][vc_row unlock_row_content=&#8221;yes&#8221; row_height_percent=&#8221;50&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;0&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; back_color=&#8221;color-jevc&#8221; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;0&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;color-prif&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; auto_height_device=&#8221;yes&#8221; uncode_shortcode_id=&#8221;210300&#8243; css=&#8221;.vc_custom_1756571269410{border-top-width: 1px !important;}&#8221; border_color_type=&#8221;uncode-palette&#8221; row_height_pixel=&#8221;450&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_column column_width_percent=&#8221;100&#8243; position_vertical=&#8221;middle&#8221; align_horizontal=&#8221;align_center&#8221; gutter_size=&#8221;0&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; back_color=&#8221;color-lxmt&#8221; back_image=&#8221;134855&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;116149&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_single_image media=&#8221;131230&#8243; media_width_percent=&#8221;90&#8243; alignment=&#8221;center&#8221; uncode_shortcode_id=&#8221;123510&#8243;][\/vc_column][vc_column column_width_percent=&#8221;80&#8243; gutter_size=&#8221;2&#8243; override_padding=&#8221;yes&#8221; column_padding=&#8221;2&#8243; style=&#8221;dark&#8221; font_family=&#8221;font-156269&#8243; back_color=&#8221;color-jevc&#8221; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;486815&#8243; back_color_type=&#8221;uncode-palette&#8221; mobile_height=&#8221;200&#8243;][vc_empty_space empty_h=&#8221;3&#8243;][vc_custom_heading text_color=&#8221;color-829503&#8243; text_font=&#8221;font-156269&#8243; text_weight=&#8221;300&#8243; uncode_shortcode_id=&#8221;110225&#8243; text_color_type=&#8221;uncode-palette&#8221;]New Architecture[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;163708&#8243;]At the heart of the Reference 20 is an entirely new platform engineered to eliminate sources of distortion previously accepted as unavoidable.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;951198&#8243;]The traditional stamped chassis has been replaced with a sophisticated multi-metal, layered construction designed to disperse and control resonant energy. Critical circuits are mounted on custom suspended, mass-loaded boards that further isolate the signal path from mechanical influence.[\/vc_custom_heading][vc_custom_heading text_color=&#8221;color-xsdn&#8221; heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;500&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;101959&#8243; text_color_type=&#8221;uncode-palette&#8221;]This structural approach is not cosmetic but rather foundational. By addressing resonance at every level, the Reference 20 preserves low-level information and spatial detail with unprecedented focus and articulation.[\/vc_custom_heading][\/vc_column][\/vc_row][vc_row unlock_row_content=&#8221;yes&#8221; row_height_percent=&#8221;0&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;0&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;0&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;color-xsdn&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; uncode_shortcode_id=&#8221;203794&#8243; border_color_type=&#8221;uncode-palette&#8221;][vc_column column_width_percent=&#8221;100&#8243; position_vertical=&#8221;middle&#8221; align_horizontal=&#8221;align_center&#8221; gutter_size=&#8221;0&#8243; override_padding=&#8221;yes&#8221; column_padding=&#8221;0&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; width=&#8221;1\/1&#8243; uncode_shortcode_id=&#8221;201654&#8243;]\n\t\t\t\t<p class=\"rs-p-wp-fix\"><\/p>\n\t\t\t\t<sr7-module data-alias=\"ref7-header-11\" data-id=\"41\" id=\"SR7_41_1\" class=\"rs-ov-hidden\" data-version=\"6.7.12\">\n\t\t\t\t\t<sr7-adjuster><\/sr7-adjuster>\n\t\t\t\t\t<sr7-content>\n\t\t\t\t\t\t<sr7-slide id=\"SR7_41_1-98\" data-key=\"98\">\n\t\t\t\t\t\t\t<sr7-txt id=\"SR7_41_1-98-4\" class=\"sr7-layer\">The Reference 20 in a truly<br \/> spectacular preamplifier<\/sr7-txt>\n\t\t\t\t\t\t<\/sr7-slide>\n\t\t\t\t\t\t<sr7-slide id=\"SR7_41_1-99\" data-key=\"99\">\n\t\t\t\t\t\t<\/sr7-slide>\n\t\t\t\t\t<\/sr7-content>\n\t\t\t\t\t<image_lists style=\"display:none\">\n\t\t\t\t\t\t<img data-src=\"\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/08\/Ref20-main-slide.jpg\" data-libid=\"134868\" data-lib=\"medialibrary\" title=\"Ref20-main-slide\" width=\"0\" height=\"0\" data-dbsrc=\"Ly9hdWRpb3Jlc2VhcmNoLmNvbS9uZXdfd2Vic2l0ZS93cC1jb250ZW50L3VwbG9hZHMvMjAyNi8wOC9SZWYyMC1tYWluLXNsaWRlLmpwZw==\"\/>\n\t\t\t\t\t\t<img data-src=\"\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/08\/Ref20-midpage-mob.jpg\" data-libid=\"134869\" data-lib=\"medialibrary\" title=\"Ref20-midpage-mob\" width=\"0\" height=\"0\" data-dbsrc=\"Ly9hdWRpb3Jlc2VhcmNoLmNvbS9uZXdfd2Vic2l0ZS93cC1jb250ZW50L3VwbG9hZHMvMjAyNi8wOC9SZWYyMC1taWRwYWdlLW1vYi5qcGc=\"\/>\n\t\t\t\t\t<\/image_lists>\n\t\t\t\t<\/sr7-module>\n\t\t\t\t<script>\n\t\t\t\t\tSR7.PMH ??={}; SR7.PMH[\"SR7_41_1\"] = {cn:0,state:false,fn: function() { if (_tpt!==undefined && _tpt.prepareModuleHeight !== undefined) {  _tpt.prepareModuleHeight({id:\"SR7_41_1\",el:[1049,1049,559,767,460],type:'hero',shdw:'0',gh:[1049,1049,559,767,460],gw:[1920,1920,1024,778,480],vpt:['100px&#039;,&#039;100px&#039;,&#039;100px&#039;,&#039;100px&#039;,&#039;100px'],size:{fullWidth:true, fullHeight:false},mh:'0',onh:0,onw:0,bg:{color:'{\"orig\":\"transparent\",\"type\":\"solid\",\"string\":\"transparent\"}'},plType:'-1',plColor:'#FFFFFF'});   SR7.PMH[\"SR7_41_1\"].state=true;} else if((SR7.PMH[\"SR7_41_1\"].cn++)<100)\tsetTimeout( SR7.PMH[\"SR7_41_1\"].fn,19);}};SR7.PMH[\"SR7_41_1\" ].fn();\n\t\t\t\t<\/script>\n[\/vc_column][\/vc_row][vc_row unlock_row_content=&#8221;yes&#8221; row_height_percent=&#8221;50&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;0&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; back_color=&#8221;color-jevc&#8221; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;0&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;color-prif&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; auto_height_device=&#8221;yes&#8221; uncode_shortcode_id=&#8221;210300&#8243; css=&#8221;.vc_custom_1756571269410{border-top-width: 1px !important;}&#8221; border_color_type=&#8221;uncode-palette&#8221; row_height_pixel=&#8221;450&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_column column_width_percent=&#8221;80&#8243; gutter_size=&#8221;2&#8243; override_padding=&#8221;yes&#8221; column_padding=&#8221;2&#8243; style=&#8221;dark&#8221; font_family=&#8221;font-156269&#8243; back_color=&#8221;color-jevc&#8221; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;486815&#8243; back_color_type=&#8221;uncode-palette&#8221; mobile_height=&#8221;200&#8243;][vc_empty_space empty_h=&#8221;3&#8243;][vc_custom_heading text_color=&#8221;color-829503&#8243; text_font=&#8221;font-156269&#8243; text_weight=&#8221;300&#8243; uncode_shortcode_id=&#8221;896906&#8243; text_color_type=&#8221;uncode-palette&#8221;]Power. Harnessed.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;954536&#8243;]The power supply of the Reference 20 has been comprehensively redesigned to elevate both performance and reliability.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;199119&#8243;]Through advanced regulation and the application of the latest component technologies\u2014including next-generation film capacitors\u2014noise on the regulated rails has been reduced by an order of magnitude. This dramatic lowering of the noise floor allows the preamplifier to resolve the finest musical nuances while maintaining composure during dynamic extremes. Articulation and speed of dynamic onset are state of the art with no sacrifice of body or musical flow.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;500&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;961387&#8243;]Occupying a single chassis, the REF20 excels over its formidable two-chassis predecessor in all respects, even with performance attributes usually associated with amplifiers: authority, impact, and resolving the extreme outer envelope of the recording space.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;509555&#8243;]The result is a presentation that is at once more revealing and more natural\u2014effortless, unforced, and profoundly transparent.[\/vc_custom_heading][\/vc_column][vc_column column_width_percent=&#8221;100&#8243; position_vertical=&#8221;middle&#8221; align_horizontal=&#8221;align_center&#8221; gutter_size=&#8221;0&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; back_color=&#8221;color-lxmt&#8221; back_image=&#8221;134861&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;179359&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_single_image media=&#8221;131230&#8243; media_width_percent=&#8221;90&#8243; alignment=&#8221;center&#8221; uncode_shortcode_id=&#8221;267806&#8243;][\/vc_column][\/vc_row][vc_row unlock_row_content=&#8221;yes&#8221; row_height_percent=&#8221;50&#8243; override_padding=&#8221;yes&#8221; h_padding=&#8221;0&#8243; top_padding=&#8221;0&#8243; bottom_padding=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;0&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;color-xsdn&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; uncode_shortcode_id=&#8221;168524&#8243; css=&#8221;.vc_custom_1730905228847{border-top-width: 1px !important;}&#8221; border_color_type=&#8221;uncode-palette&#8221; row_height_pixel=&#8221;450&#8243;][vc_column column_width_percent=&#8221;100&#8243; position_vertical=&#8221;middle&#8221; align_horizontal=&#8221;align_center&#8221; gutter_size=&#8221;0&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; back_color=&#8221;color-lxmt&#8221; back_image=&#8221;134648&#8243; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;196373&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_single_image media=&#8221;131230&#8243; media_width_percent=&#8221;90&#8243; alignment=&#8221;center&#8221; uncode_shortcode_id=&#8221;797870&#8243;][\/vc_column][vc_column column_width_percent=&#8221;75&#8243; position_vertical=&#8221;middle&#8221; gutter_size=&#8221;2&#8243; override_padding=&#8221;yes&#8221; column_padding=&#8221;2&#8243; expand_height=&#8221;yes&#8221; style=&#8221;light&#8221; font_family=&#8221;font-156269&#8243; back_color=&#8221;color-xsdn&#8221; overlay_alpha=&#8221;50&#8243; shift_x=&#8221;0&#8243; shift_y=&#8221;0&#8243; shift_y_down=&#8221;0&#8243; z_index=&#8221;0&#8243; medium_width=&#8221;0&#8243; mobile_width=&#8221;0&#8243; css_animation=&#8221;bottom-t-top&#8221; width=&#8221;1\/2&#8243; uncode_shortcode_id=&#8221;524879&#8243; back_color_type=&#8221;uncode-palette&#8221;][vc_empty_space empty_h=&#8221;3&#8243;][vc_custom_heading text_color=&#8221;color-wvjs&#8221; heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;500&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;413435&#8243; text_color_type=&#8221;uncode-palette&#8221;]The cumulative result of these advances is not incremental. It is transformational.[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h4&#8243; text_font=&#8221;font-156269&#8243; text_size=&#8221;h4&#8243; text_weight=&#8221;300&#8243; text_height=&#8221;fontheight-140156&#8243; uncode_shortcode_id=&#8221;174863&#8243;]The Reference 20 reveals music with a level of dimensionality, tonal integrity, timing coherence, and dynamic expression that extends beyond the boundaries of previous reference designs. 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