{"id":2426,"date":"2025-12-22T12:14:19","date_gmt":"2025-12-22T12:14:19","guid":{"rendered":"https:\/\/jjystage.com\/?post_type=product&#038;p=2426"},"modified":"2026-05-12T05:08:25","modified_gmt":"2026-05-12T05:08:25","slug":"da-400-dual-channel-power-amplifier","status":"publish","type":"product","link":"https:\/\/jjystage.com\/?product=da-400-dual-channel-power-amplifier","title":{"rendered":"Dual Channel 400W Power Amplifier [DA-400]"},"content":{"rendered":"<h2><b>Dual Channel DA-400 Power Amplifier &amp; Subwoofer Amplifier for Professional Audio Systems<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><b>Dual Channel 400W Power Amplifier [DA-400]<\/b><span style=\"font-weight: 400;\"> from JJY Stage is designed for professional live sound, small event systems, commercial audio installations, and rental audio applications. As a trusted China manufacturer, JJY Stage delivers reliable and stable amplifier solutions for global B2B buyers including distributors, wholesalers, event companies, rental suppliers, and stage production businesses.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This professional <\/span><a href=\"https:\/\/jjystage.com\/sound-audio\/amplifier-series\/\"><b>subwoofer amplifier<\/b><\/a><span style=\"font-weight: 400;\"> provides clear sound amplification, stable signal transmission, and balanced audio performance for professional sound systems. The DA-400 works efficiently with stage speakers, subwoofers, and amplifier speaker systems for indoor and outdoor applications.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The amplifier is suitable for conference halls, churches, clubs, DJ setups, wedding events, and small to medium-scale professional audio projects requiring reliable sound output and efficient performance.<\/span><\/p>\n<h2><b>Powerful Audio Features &amp; Benefits<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The DA-400 power amplifier is engineered for stable operation and long working hours in professional sound environments.<\/span><\/p>\n<h3><b>Professional Amplifier Features<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dual channel 400W professional power output<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stable and clear audio signal performance<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Balanced bass and vocal amplification<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reliable cooling system for continuous operation<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compact and durable amplifier structure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compatible with professional stage speakers and subwoofers<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Smooth sound amplification for live performances<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This amplifier is suitable for subwoofer amplifier systems, commercial amplifier speaker projects, and complete professional audio setups. It delivers reliable sound quality for concerts, conferences, DJ performances, and event production.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The DA-400 Power Amplifier is also a suitable option for buyers searching for unit amplifier, 5 channel amplifier, and compact professional sound equipment solutions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Compared with products like portable guitar amplifier, mini amplifier, and bass amplifier, the DA-400 provides more stable and professional audio performance for commercial event use.<\/span><\/p>\n<h2><b>OEM Factory &amp; Custom Manufacturing Services<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">As an experienced OEM factory in <\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/China\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">China<\/span><\/a><span style=\"font-weight: 400;\">, JJY Stage provides customization and wholesale production support for international buyers.<\/span><\/p>\n<h3><b>OEM &amp; Export Support<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">OEM and ODM amplifier manufacturing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Custom logo printing and branding support<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Front panel and packaging customization<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wholesale supply for distributors and dealers<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Export packaging and global shipping services<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Technical support for professional audio projects<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">We support long-term cooperation with rental companies, importers, wholesalers, and stage production businesses worldwide. Our factory focuses on stable manufacturing, strict quality control, and reliable export service.<\/span><span style=\"font-weight: 400;\"><\/p>\n<p><\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Specifications:<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Rated Power:<\/b>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Stereo:<\/b><span style=\"font-weight: 400;\"> 400W @ 8\u03a9 (1kHz); 600W @ 4\u03a9 (1kHz)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Bridged Mono:<\/b><span style=\"font-weight: 400;\"> 800W @ 8\u03a9 (1kHz)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Power Control:<\/b><span style=\"font-weight: 400;\"> -2 dB \/ -4 dB \/ -6 dB<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>THD+N:<\/b><span style=\"font-weight: 400;\"> &lt;0.1% @ 1kHz, 4\u03a9; &lt;0.05% @ 20Hz-20kHz, 4\u03a9<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Input CMRR:<\/b><span style=\"font-weight: 400;\"> &gt;95 dB<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Output Noise Floor:<\/b><span style=\"font-weight: 400;\"> -103 dB<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gain (Selectable):<\/b><span style=\"font-weight: 400;\"> +32 dB \/ +35.75 dB \/ +38 dB<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Sensitivity (for 4\u03a9 Load):<\/b><span style=\"font-weight: 400;\"> +12.75 dBu \/ +9.75 dBu \/ +6 dBu<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Damping Factor (@ 1kHz, 8\u03a9):<\/b><span style=\"font-weight: 400;\"> &gt;400<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Frequency Response:<\/b><span style=\"font-weight: 400;\"> 20 Hz &#8211; 20 kHz (+0 \/ -0.5 dB)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Input Impedance (Balanced):<\/b><span style=\"font-weight: 400;\"> 20 k\u03a9<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Dimensions (H \u00d7 W \u00d7 D):<\/b><span style=\"font-weight: 400;\"> 88 mm \u00d7 483 mm \u00d7 430 mm<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Net Weight:<\/b><span style=\"font-weight: 400;\"> 17 kg<\/span><\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">\n<h2><b>Applications of DA-400 Power Amplifier<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The DA-400 amplifier is widely used in professional audio applications such as:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Conference and meeting room audio systems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Churches and worship venues<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Clubs and DJ sound systems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wedding and entertainment events<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rental and touring audio systems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stage production companies<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Commercial sound installations<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Professional live sound reinforcement projects<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The amplifier works effectively with stage speakers and subwoofer systems to build complete professional audio setups for small and medium venues.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It provides stable sound performance for both indoor and outdoor event applications.<\/span><\/p>\n<h2><b>Why Choose JJY Stage<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">JJY Stage is a professional China manufacturer specializing in LED displays, stage lighting, and <\/span><a href=\"https:\/\/jjystage.com\/sound-audio\/\"><span style=\"font-weight: 400;\">professional audio equipment<\/span><\/a><span style=\"font-weight: 400;\"> for global B2B markets.<\/span><\/p>\n<h3><b>Factory Advantages<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Strong OEM and ODM manufacturing capability<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Competitive factory-direct pricing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Strict quality inspection and testing system<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fast production and export delivery<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Support for wholesale and bulk orders<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reliable technical and after-sales support<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">We help customers build complete professional audio systems with reliable amplifiers, stage speakers, and commercial sound equipment solutions.<\/span><\/p>\n<h2><b>Contact JJY Stage Today<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Looking for a reliable <\/span><b>Dual Channel 400W Power Amplifier<\/b><span style=\"font-weight: 400;\"> or professional <\/span><b>subwoofer amplifier<\/b><span style=\"font-weight: 400;\"> solution for your next project? Contact <\/span><a href=\"https:\/\/jjystage.com\/contact-us\/\"><span style=\"font-weight: 400;\">JJY Stage<\/span><\/a><span style=\"font-weight: 400;\"> today for OEM customization, wholesale pricing, and global export support for professional audio systems.<\/span><\/p>\n<h2><b>FAQs \u2013 Dual Channel 400W Power Amplifier [DA-400]<\/b><\/h2>\n<h3><b>Q1: What is the DA-400 power amplifier used for?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The DA-400 is designed for small to medium professional audio systems, including events, conferences, clubs, and rental sound setups.<\/span><\/p>\n<h3><b>Q2: Can DA-400 be used as a subwoofer amplifier?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, it can work as a <\/span><b>subwoofer amplifier<\/b><span style=\"font-weight: 400;\"> for small bass systems and also supports full-range stage speakers.<\/span><\/p>\n<h3><b>Q3: Is DA-400 suitable for rental businesses?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, its compact size and stable performance make it ideal for <\/span><b>audio equipment rental<\/b><span style=\"font-weight: 400;\"> and mobile sound systems.<\/span><\/p>\n<h3><b>Q4: Does it support stage speakers?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, DA-400 works efficiently with <\/span><b>stage speakers<\/b><span style=\"font-weight: 400;\">, monitors, and small line array systems.<\/span><\/p>\n<h3><b>Q5: Does JJY Stage offer OEM customization?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, JJY Stage provides OEM\/ODM services including logo printing, panel design, and export packaging.<\/span><\/p>\n<h3><b>Q6: Is DA-400 good for outdoor events?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, it can be used for small outdoor events, weddings, and mobile DJ setups.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dual Channel DA-400 Power Amplifier &amp; Subwoofer Amplifier for Professional Audio Systems The Dual Channel 400W Power Amplifier [DA-400] from JJY Stage is designed for professional live sound, small event systems, commercial audio installations, and rental audio applications. As a trusted China manufacturer, JJY Stage delivers reliable and stable amplifier solutions for global B2B buyers including distributors, wholesalers, event companies, rental suppliers, and stage production businesses. This professional subwoofer amplifier provides clear sound amplification, stable signal transmission, and balanced audio performance for professional sound systems. The DA-400 works efficiently with stage speakers, subwoofers, and amplifier speaker systems for indoor and outdoor applications. The amplifier is suitable for conference halls, churches, clubs, DJ setups, wedding events, and small to medium-scale professional audio projects requiring reliable sound output and efficient performance. Powerful Audio Features &amp; Benefits The DA-400 power amplifier is engineered for stable operation and long working hours in professional sound environments. Professional Amplifier Features Dual channel 400W professional power output Stable and clear audio signal performance Balanced bass and vocal amplification Reliable cooling system for continuous operation Compact and durable amplifier structure Compatible with professional stage speakers and subwoofers Smooth sound amplification for live performances This amplifier is suitable for subwoofer amplifier systems, commercial amplifier speaker projects, and complete professional audio setups. It delivers reliable sound quality for concerts, conferences, DJ performances, and event production. The DA-400 Power Amplifier is also a suitable option for buyers searching for unit amplifier, 5 channel amplifier, and compact professional sound equipment solutions. Compared with products like portable guitar amplifier, mini amplifier, and bass amplifier, the DA-400 provides more stable and professional audio performance for commercial event use. OEM Factory &amp; Custom Manufacturing Services As an experienced OEM factory in China, JJY Stage provides customization and wholesale production support for international buyers. OEM &amp; Export Support OEM and ODM amplifier manufacturing Custom logo printing and branding support Front panel and packaging customization Wholesale supply for distributors and dealers Export packaging and global shipping services Technical support for professional audio projects We support long-term cooperation with rental companies, importers, wholesalers, and stage production businesses worldwide. Our factory focuses on stable manufacturing, strict quality control, and reliable export service. Specifications: Rated Power: Stereo: 400W @ 8\u03a9 (1kHz); 600W @ 4\u03a9 (1kHz) Bridged Mono: 800W @ 8\u03a9 (1kHz) Power Control: -2 dB \/ -4 dB \/ -6 dB THD+N: &lt;0.1% @ 1kHz, 4\u03a9; &lt;0.05% @ 20Hz-20kHz, 4\u03a9 Input CMRR: &gt;95 dB Output Noise Floor: -103 dB Gain (Selectable): +32 dB \/ +35.75 dB \/ +38 dB Sensitivity (for 4\u03a9 Load): +12.75 dBu \/ +9.75 dBu \/ +6 dBu Damping Factor (@ 1kHz, 8\u03a9): &gt;400 Frequency Response: 20 Hz &#8211; 20 kHz (+0 \/ -0.5 dB) Input Impedance (Balanced): 20 k\u03a9 Dimensions (H \u00d7 W \u00d7 D): 88 mm \u00d7 483 mm \u00d7 430 mm Net Weight: 17 kg Applications of DA-400 Power Amplifier The DA-400 amplifier is widely used in professional audio applications such as: Conference and meeting room audio systems Churches and worship venues Clubs and DJ sound systems Wedding and entertainment events Rental and touring audio systems Stage production companies Commercial sound installations Professional live sound reinforcement projects The amplifier works effectively with stage speakers and subwoofer systems to build complete professional audio setups for small and medium venues. It provides stable sound performance for both indoor and outdoor event applications. Why Choose JJY Stage JJY Stage is a professional China manufacturer specializing in LED displays, stage lighting, and professional audio equipment for global B2B markets. Factory Advantages Strong OEM and ODM manufacturing capability Competitive factory-direct pricing Strict quality inspection and testing system Fast production and export delivery Support for wholesale and bulk orders Reliable technical and after-sales support We help customers build complete professional audio systems with reliable amplifiers, stage speakers, and commercial sound equipment solutions. Contact JJY Stage Today Looking for a reliable Dual Channel 400W Power Amplifier or professional subwoofer amplifier solution for your next project? Contact JJY Stage today for OEM customization, wholesale pricing, and global export support for professional audio systems. FAQs \u2013 Dual Channel 400W Power Amplifier [DA-400] Q1: What is the DA-400 power amplifier used for? The DA-400 is designed for small to medium professional audio systems, including events, conferences, clubs, and rental sound setups. Q2: Can DA-400 be used as a subwoofer amplifier? Yes, it can work as a subwoofer amplifier for small bass systems and also supports full-range stage speakers. Q3: Is DA-400 suitable for rental businesses? Yes, its compact size and stable performance make it ideal for audio equipment rental and mobile sound systems. Q4: Does it support stage speakers? Yes, DA-400 works efficiently with stage speakers, monitors, and small line array systems. Q5: Does JJY Stage offer OEM customization? Yes, JJY Stage provides OEM\/ODM services including logo printing, panel design, and export packaging. Q6: Is DA-400 good for outdoor events? Yes, it can be used for small outdoor events, weddings, and mobile DJ setups.<\/p>\n","protected":false},"featured_media":2427,"template":"","meta":[],"product_brand":[],"product_cat":[64],"product_tag":[],"class_list":["post-2426","product","type-product","status-publish","has-post-thumbnail","product_cat-amplifier-series","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/jjystage.com\/index.php?rest_route=\/wp\/v2\/product\/2426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jjystage.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jjystage.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jjystage.com\/index.php?rest_route=\/wp\/v2\/media\/2427"}],"wp:attachment":[{"href":"https:\/\/jjystage.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2426"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jjystage.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=2426"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jjystage.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=2426"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jjystage.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=2426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}