{"id":16,"date":"2025-08-12T02:04:39","date_gmt":"2025-08-12T02:04:39","guid":{"rendered":"https:\/\/fiatoaudio.com\/?post_type=product&#038;p=16"},"modified":"2025-08-20T03:36:57","modified_gmt":"2025-08-20T03:36:57","slug":"1","status":"publish","type":"product","link":"https:\/\/fiatoaudio.com\/?product=1","title":{"rendered":"DK4 class D Power Amplifier"},"content":{"rendered":"<ul>\n<li>Solid light convenient 1U size body<\/li>\n<li>Standard switch mode with PFC technique<\/li>\n<li>AC 220V power supply fluctuation purification<\/li>\n<li>Grounding noise two-way drainage purification<\/li>\n<li>Signal source noise Level-2 purification<\/li>\n<li>Direct energy amplifier, speaker dynamic energy recycle<\/li>\n<li>Constant undistorted power control, complex anti-phase shift control<\/li>\n<li>Soft protection for pre-overheat and pre-overload<\/li>\n<\/ul>\n\n<table id=\"tablepress-1\" class=\"tablepress tablepress-id-1\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">MODEL NO<\/th><th class=\"column-2\">FV-ADK4350<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">8\u03a9 Stereo Output Power<\/td><td class=\"column-2\">4 X350W<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Output Circuit<\/td><td class=\"column-2\">D<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">Height<\/td><td class=\"column-2\">1U<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">Distortion<\/td><td class=\"column-2\"><0.005%<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">SNR<\/td><td class=\"column-2\">112dB(A-weighting)<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Frequency Response<\/td><td class=\"column-2\">20Hz-20kHz +\/-0.25dB<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">Damping Factor<\/td><td class=\"column-2\">>1000<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">Switch Rate<\/td><td class=\"column-2\">50V\/us<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">Input Impedance<\/td><td class=\"column-2\">30k\u03a9<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">Input Sensitivity<\/td><td class=\"column-2\">0.775V<\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">DC Residual<\/td><td class=\"column-2\"><5mV<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">Power Factor cos\uff08\u03a6\uff09<\/td><td class=\"column-2\">>0.95@>500W<\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">Maximum Output Voltage \/ Current<\/td><td class=\"column-2\">100Vpeak \/ 50Apeak<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">Power<\/td><td class=\"column-2\">Standard switch mode with PFCtechnique<\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\">Dimension<\/td><td class=\"column-2\">482mm x 257mm x 43mm<\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\">Net weight<\/td><td class=\"column-2\">4.30Kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-1 from cache -->\n","protected":false},"excerpt":{"rendered":"<h2 class=\"this-description-name\">UPDM<\/h2>\n<h2 class=\"this-description-name\">(Unipolar pulse density modulation) audio power<br \/>\nTechnical proposal with super low power consumption<\/h2>\n","protected":false},"featured_media":135,"comment_status":"open","ping_status":"closed","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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