{"id":9537,"date":"2026-10-17T10:24:08","date_gmt":"2026-10-17T10:24:08","guid":{"rendered":"https:\/\/yh-audio.com\/?post_type=product&#038;p=9537"},"modified":"2026-10-17T10:24:08","modified_gmt":"2026-10-17T10:24:08","slug":"da-4450-digital-power-amplifier","status":"publish","type":"product","link":"https:\/\/yh-audio.com\/ar\/product\/da-4450-digital-power-amplifier\/","title":{"rendered":"DA 4450 Digital Power Amplifier"},"content":{"rendered":"<h2>YH-DA-4450 Product Overview<\/h2>\n<p>YH-DA-4450 is prepared for professional audio distributors, retailers, rental companies, installers and project buyers sourcing from Enping, China.<\/p>\n<h2>\u0634\u0631\u0627\u0621 \u0628\u0627\u0644\u062c\u0645\u0644\u0629<\/h2>\n<ul>\n<li>\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062f\u0641\u0639\u0629 \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u0648\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u062c\u0631\u064a\u0628\u064a\u0629 \u064a\u062e\u0636\u0639 \u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u0635\u0646\u0639 \u0627\u0644\u062d\u0627\u0644\u064a\u0629.<\/li>\n<li>\u064a\u0645\u0643\u0646 \u062a\u0646\u0633\u064a\u0642 \u0634\u0631\u0627\u0621 \u0627\u0644\u0646\u0645\u0627\u0630\u062c \u0627\u0644\u0645\u062e\u062a\u0644\u0637\u0629 \u062d\u064a\u062b\u0645\u0627 \u0643\u0627\u0646 \u0630\u0644\u0643 \u0639\u0645\u0644\u064a\u064b\u0627.<\/li>\n<li>\u062a\u0639\u062a\u0645\u062f \u062e\u064a\u0627\u0631\u0627\u062a \u0634\u0639\u0627\u0631 OEM \u0648\u0627\u0644\u062a\u0639\u0628\u0626\u0629 \u0639\u0644\u0649 \u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0648\u0627\u0644\u0643\u0645\u064a\u0629.<\/li>\n<li>\u064a\u062c\u0628 \u0625\u0639\u0627\u062f\u0629 \u062a\u0623\u0643\u064a\u062f \u0646\u0637\u0627\u0642 \u0627\u0644\u062a\u0631\u062f\u062f \u0648\u0627\u0644\u062c\u0647\u062f \u0648\u0627\u0644\u0642\u0627\u0628\u0633 \u0648\u0627\u0644\u0645\u0644\u062d\u0642\u0627\u062a \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0634\u0647\u0627\u062f\u0629 \u0642\u0628\u0644 \u0627\u0644\u0627\u0642\u062a\u0628\u0627\u0633.<\/li>\n<\/ul>\n<h2>\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0645\u062a\u0627\u062d\u0629<\/h2>\n<table style=\"width:100%;border-collapse:collapse\">\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">\u0646\u0645\u0648\u0630\u062c<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">DA-4450<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Channels<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">4<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">8 \u03a9 output<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">4\u00d7350 W<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">4 \u03a9 output<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">4\u00d7550 W<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">PS-088C-01<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">20 Hz\u201320 kHz, \u00b10.5 dB at 1 W \/ 8 \u03a9<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">THD<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">0.02 at 1 kHz \/ 8 \u03a9 (percent sign not stated; confirm unit)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">\u0646\u0633\u0628\u0629 \u0627\u0644\u0625\u0634\u0627\u0631\u0629 \u0625\u0644\u0649 \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">\u2265105 dB, A-weighted<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Damping factor<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">\u2265250<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Input sensitivity<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">0.775 V \/ 1.0 V<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Slew rate<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">17 V\/\u00b5s<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Input impedance<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">20 k\u03a9 balanced \/ 10 k\u03a9 unbalanced<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">\u0627\u0644\u062d\u062f\u064a\u062b \u0627\u0644\u0645\u062a\u0628\u0627\u062f\u0644<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">75 dB<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Protection<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">DC, short circuit, over-temperature and power-switch transient<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Indicators<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">Signal, power, distortion and protection LEDs<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Cooling<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">Two-level forced tunnel airflow toward rear panel<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Connection terminal<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">\u201cCanon\u201d stated; confirm exact XLR\/connector configuration<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">AC versions<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">110\u2013120 V or 220\u2013240 V, 50\/60 Hz; internal jumper stated<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">Operating temperature<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">0\u201350\u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">\u0623\u0628\u0639\u0627\u062f<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">480 \u00d7 340 \u00d7 48 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">\u0627\u0644\u0648\u0632\u0646 \u0627\u0644\u0635\u0627\u0641\u064a<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">4.7 kg<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:10px;font-weight:bold;width:38%\">SKU<\/td>\n<td style=\"border:1px solid #ddd;padding:10px\">Q00015<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>\u062a\u0639\u062a\u0645\u062f \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0639\u0644\u0649 \u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u0645\u0635\u0646\u0639 \/ \u0627\u0644\u0645\u0635\u062f\u0631 \u0627\u0644\u062d\u0627\u0644\u064a\u0629 \u0648\u064a\u062c\u0628 \u0625\u0639\u0627\u062f\u0629 \u062a\u0623\u0643\u064a\u062f\u0647\u0627 \u0642\u0628\u0644 \u0627\u0644\u0637\u0644\u0628 \u0628\u0627\u0644\u062c\u0645\u0644\u0629.<\/em><\/p>\n<h2>\u0637\u0644\u0628 \u0627\u0642\u062a\u0628\u0627\u0633<\/h2>\n<p>\u0623\u0631\u0633\u0644 YH Audio \u0627\u0644\u0633\u0648\u0642 \u0627\u0644\u0645\u0633\u062a\u0647\u062f\u0641 \u0648\u0627\u0644\u0643\u0645\u064a\u0629 \u0648\u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0648\u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0637\u0644\u0648\u0628. \u0633\u0646\u0624\u0643\u062f \u0627\u0644\u0625\u0635\u062f\u0627\u0631 \u0627\u0644\u062d\u0627\u0644\u064a \u060c \u0645\u0648\u0643 \u060c \u062a\u0648\u0627\u0641\u0631 \u0627\u0644\u0639\u064a\u0646\u0629 \u060c \u0627\u0644\u0645\u0647\u0644\u0629 \u0627\u0644\u0632\u0645\u0646\u064a\u0629 \u0648\u062e\u064a\u0627\u0631\u0627\u062a OEM.<\/p>","protected":false},"excerpt":{"rendered":"<p>YH-DA-4450 is a professional audio model supplied by YH Audio for distributors, retailers, rental companies, installers and other B2B buyers, with flexible small-batch and mixed-model sourcing options.<\/p>","protected":false},"featured_media":9538,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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