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PMA-1520AEPMA-1520AEhttp://prod.authoring.apac.denon.com/cn/Lists/ProductDetails/DispForm.aspx?ID=117<p>高级UHC-MOS单端推挽集成放大器</p>Active0

 

 

PMA-1520AEhttp://prod.authoring.apac.denon.com/cn/Lists/ProductDetails/DispForm.aspx?ID=117<div class="ExternalClassCBC414E557A241F7BD456F6336B72EE5"><div id="features" class="section bg_LinearContent2 padB25"><div class="section bg_LinearContent3"><div class="wrapInner"><div class="row- marB30"><div class="row- marT30"><div class="col_6 MS_100"><div class="lH24"> <hgroup class="f30 ff_45 c_White marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77"> </h4> </hgroup> <p>PMA-1520AE的升级版高级UHC-MOS单推挽电路或采用漏磁消除技术的双变压器证明,天龙始终能够找到推动器著名的双通道产品的方法。精密直接机械接地结构彻底抑制振动,从而最大限度减少对输出信号的不利影响。作为主要的振动源,电源变压器已经利用各种抗振动材料和散热稳定器实现了“悬浮”安装。其还拥有作为模拟和数字电路的分离式电源。底座结构配备了独立挡板和大型高等级音量电位器,进一步抑制了外部噪音和部件之间不必要的干扰。所有相关组件都经过了严格的挑选,确保提供天龙赖以成名的高级音质。高性能唱机(phono)均衡器令PMA-1520AE成为黑胶唱片(vinyl)爱好者的最佳选择。全部组件采用镌刻天龙(Denon)标识的厚重铝合金前面板封装保护。</p></div></div></div></div></div><div class="section bg_White"><div class="wrapInner"><div class="row- marT30 marB30"><div class="col_3 MS_100"> <hgroup class="f30 ff_45 c_White marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">先进的超高电流(UHC)-MOS<span class="c_Black ff_45">单推挽电路实现平衡功率和细节</span></h4> </hgroup> <div class="lH24"><p>该放大器特别采用高级UHC(超高电流)-MOS技术,利用最少数量的高电流放大器元件,以平衡先进的扬声器驱动性能并改善音质。高级UHC-MOS是一种理想放大器,其电源性能优于双极晶体管,并综合了MOSFET的音质优势。高级UHC-MOS采用单推挽配置,消除了放大阶段的偏差,并利用精致的音乐细节实现了高功率平衡。该电路设计巧妙再现了从精巧的音乐细节到富有音乐表现力的强大高峰等全部音域。</p><p>功率放大器的输入阶段采用了新的双FET。这款功能丰富的双FET抑制了声音强弱变化的不利影响,从而有助于稳定操作。此外,由于差动放大器电路的第一阶段应用了级联自举电路(CBC),因此现在可以对频率相位中的易忽略差异进行显著放大。</p></div></div><div class="col_3 MS_100"> <hgroup class="f30 ff_45 c_White marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77"> <span class="c_Black ff_45">直接机械接地结构最大限度减少不必要的振动</span></h4> </hgroup> <div class="lH24"><p>PMA的特别结构可以彻底抑制振动和电气噪音的不利影响。与以往的机型相比,重心有所降低,功率放大器主板的安装更加靠近底座底部,此类结构有助于保护电路便于振动。功率放大器模块采用了左右对称的双单声道配置。而且,由于不同信号电平的电路已经被分离,因此可以彻底避挽相互干扰或噪音。这些设计改进有助于实现高度透明和富有表现力的声音。</p></div></div></div></div></div><div class="section bg_LinearContent"><div class="wrapInner"><div class="row- marT30 marB30"><div class="col_3 MS_100"> <hgroup class="f30 ff_45 c_White marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77"> <span class="c_Black ff_45">漏磁消除安装双变压器</span></h4> </hgroup> <div class="lH24"><p>两个变压器并行连接,从而大幅度提高电气性能和磁力性能。漏磁消除(LC)安装系统提供了一种消除彼此磁力影响的方式,已被用于最大限度减少放大器内部噪声来源——磁通量的泄漏。变压器和底座之间安装了一块电路板。不同于传统机型,该电路板采用双层结构。特殊树脂和抗振动材料的结合也被用于产生可避挽不利的音质影响的浮动效果。</p></div></div><div class="col_3 MS_100"> <hgroup class="f30 ff_45 marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">高级音量控制实现精准质量管理</h4> </hgroup> <div class="lH24 "><p>作为显著影响放大器音频质量的要素,高级音量控制是高档顶级机型中使用的相同的电机驱动音量控制。天龙工程师精心测试了多种类型的音量控制,最后确定了这款能够展示同级音频表现力的设计。</p></div></div></div><div class="row- marT30 marB30"><div class="col_3 MS_100"> <hgroup class="f30 ff_45 c_White marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">高电流动态电源支持高速度和大电流</h4> </hgroup> <div class="lH24"><p>整流电路中采用了拥有公认优良开关特性的低噪声肖特基势垒二极管。通过电源电路中使用的铜箔的常规厚度倍增实现了阻抗的降低,最终该设计增加了电源的稳定性。定制阻断电容器部件经过充分测试,不仅有助于提高音质,而且突出了天龙在音频技术和出色音质方面的绝佳做法。</p></div></div><div class="col_3 MS_100"> <hgroup class="f30 ff_45 marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">最小化信道保护信号纯度</h4> </hgroup> <div class="lH24 "><p>信道彻底简单而直接,确保了纯粹的声音播放。信道的最小化可以防止电路之间的信号衰减。在放大器级别,最小信道减少了进入信号放大基础部件——接地电路的噪音,从而稳定了接地电势。当放大器电路的运行基础非常明确时,声音播放也将非常清晰。</p></div></div></div><div class="row- marT30 marB30"><div class="col_3 MS_100"> <hgroup class="f30 ff_45 c_White marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">全新与升级特性</h4> </hgroup> <div class="lH24"><ul class="ul ul1"><li>具有新类型双FET晶体管的先进超高电流(UHC)</li><li>MOS单推挽电路实现更多透明度和细节设计</li><li>漏磁消除安装双变压器</li><li>高级音量控制实现精准调整</li><li>高性能唱机均衡器</li><li>严格挑选的高音质部件</li></ul></div></div><div class="col_3 MS_100"> <hgroup class="f30 ff_45 marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">最先进的天龙解决方案<span class="c_Black ff_45"><br>打造最高声音品质</span></h4> </hgroup> <div class="lH24 "><ul class="ul ul1"><li>2x 130 W (4ohm)</li><li>肖特基二极管和选定部件</li><li>固定散热片可抑制振动</li><li>微处理器制动模式</li><li>镀金扬声器端子</li><li>具有直接机械接地结构的抗振设计</li><li>高电流动态电源支持高速度和大电流</li><li>最小化信道保护信号纯度</li><li>广泛播放,支持SACD和高分辨率音频(如:FLAC HD或DSD)</li></ul></div></div></div><div class="col_3 MS_100"> <hgroup class="f30 ff_45 marB20 MS_noTMar"> <h4 class="c_PremiumBlue ff_77">易于使用</h4> </hgroup> <div class="lH24 "><ul class="ul ul1"><li>系统遥控器不仅可以控制放大器,而且可以控制CD</li></ul></div></div></div></div></div></div></div><p>​<b style="font-size: 8pt;"><span style="font-family: 宋体;">功率放大器部分</span></b></p><p class="MsoNormal"><span style="font-family: 宋体;">额定输出功率:</span><span style="font-family: 宋体;">双声道驱动(</span><span lang="EN-US">CD IN</span><span style="font-family: 宋体;">~</span><span lang="EN-US">SPEAKER OUT</span><span style="font-family: 宋体;">)</span></p><p class="MsoNormal"><span lang="EN-US">65W+65W</span><span style="font-family: 宋体;">(</span><span lang="EN-US">8</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">欧姆,</span><span lang="EN-US">20Hz</span><span style="font-family: 宋体;">~</span><span lang="EN-US">20kHz</span><span style="font-family: 宋体;">,</span><span lang="EN-US">T.H.D. 0.07%</span><span style="font-family: 宋体;">)</span></p><p class="MsoNormal"><span style="font-family: 宋体;">动态功率:</span><span lang="EN-US"> 130W+130W</span><span style="font-family: 宋体;">(</span><span lang="EN-US">4</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">欧姆,</span><span lang="EN-US">DIN</span><span style="font-family: 宋体;">,</span><span lang="EN-US">1kHz</span><span style="font-family: 宋体;">,</span><span lang="EN-US">T.H.D. 0.7%</span><span style="font-family: 宋体;">)</span></p><p class="MsoNormal"><span style="font-family: 宋体;">高频失真:</span><span lang="EN-US"> 0.01%</span><span style="font-family: 宋体;">(额定输出:</span><span lang="EN-US">-3dB</span><span style="font-family: 宋体;">),</span><span lang="EN-US">8</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">欧姆,</span><span lang="EN-US">1kHz</span></p><p class="MsoNormal"><span style="font-family: 宋体;">输出端子:</span><span style="font-family: 宋体;">扬声器:</span></p><p class="MsoNormal"><span lang="EN-US">A</span><span style="font-family: 宋体;">或</span><span lang="EN-US">B</span><span style="font-family: 宋体;">:</span><span lang="EN-US">4</span><span style="font-family: 宋体;">~</span><span lang="EN-US">16</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">欧姆</span></p><p class="MsoNormal"><span lang="EN-US">A+B</span><span style="font-family: 宋体;">:</span><span lang="EN-US">8</span><span style="font-family: 宋体;">~</span><span lang="EN-US">16</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">欧姆</span></p><p class="MsoNormal"><span style="font-family: 宋体;">适合耳机</span><span lang="EN-US">/</span><span style="font-family: 宋体;">立体声耳机</span></p><p class="MsoNormal"><span style="font-family: 宋体;">输入灵敏度</span><span lang="EN-US">/</span><span style="font-family: 宋体;">输入阻抗纯直入:</span><span lang="EN-US">0.84V/47k</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">千欧姆</span></p><p class="MsoNormal"><span style="font-family: 宋体;">增益:</span><span lang="EN-US">29dB</span></p><p class="MsoNormal"><span lang="EN-US"> </span></p><p class="MsoNormal"><b><span style="font-family: 宋体;">前置放大器部分</span><span lang="EN-US"></span></b></p><p class="MsoNormal"><span style="font-family: 宋体;">均衡器放大输出:</span></p><p class="MsoNormal"><span style="font-family: 宋体;">(</span><span lang="EN-US">REC OUT</span><span style="font-family: 宋体;">端子)</span></p><p class="MsoNormal"><span lang="EN-US">150mV</span></p><p class="MsoNormal"><span style="font-family: 宋体;">输入灵敏度</span><span lang="EN-US">/</span><span style="font-family: 宋体;">输入阻抗</span><span lang="EN-US">PHONO</span><span style="font-family: 宋体;">(</span><span lang="EN-US">MM</span><span style="font-family: 宋体;">):</span><span lang="EN-US">2.5mV/47k</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">千欧姆</span></p><p class="MsoNormal"><span lang="EN-US">PHONO</span><span style="font-family: 宋体;">(</span><span lang="EN-US">MC</span><span style="font-family: 宋体;">):</span><span lang="EN-US">200</span><span style="font-family: 宋体;">μ</span><span lang="EN-US">V/100</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">欧姆</span></p><p class="MsoNormal"><span lang="EN-US">CD</span><span style="font-family: 宋体;">,</span><span lang="EN-US">TUNER</span><span style="font-family: 宋体;">,</span><span lang="EN-US">AUX</span><span style="font-family: 宋体;">,</span><span lang="EN-US">NETWORK</span><span style="font-family: 宋体;">,</span><span lang="EN-US">RECORDER:</span></p><p class="MsoNormal"><span lang="EN-US">125mV/47k</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">千欧姆(</span><span lang="EN-US">SOURCEDIRECT</span><span style="font-family: 宋体;">:关闭)</span></p><p class="MsoNormal"><span lang="EN-US">125mV/23k</span><span style="font-family: 宋体;">Ω</span><span lang="EN-US">/</span><span style="font-family: 宋体;">千欧姆(</span><span lang="EN-US">SOURCEDIRECT</span><span style="font-family: 宋体;">:开启)</span></p><p class="MsoNormal"><span lang="EN-US">RIAA</span><span style="font-family: 宋体;">偏差:</span><span lang="EN-US"> PHONO</span><span style="font-family: 宋体;">:</span><span lang="EN-US">20Hz</span><span style="font-family: 宋体;">~</span><span lang="EN-US">20kHz </span><span style="font-family: 宋体;">±</span><span lang="EN-US">0.5dB</span></p><p class="MsoNormal"><span style="font-family: 宋体;">最大输入:</span><span lang="EN-US"> PHONO</span><span style="font-family: 宋体;">(</span><span lang="EN-US">MM</span><span style="font-family: 宋体;">):</span><span lang="EN-US">130mV/1kHz</span></p><p class="MsoNormal"><span lang="EN-US">PHONO</span><span style="font-family: 宋体;">(</span><span lang="EN-US">MC</span><span style="font-family: 宋体;">):</span><span lang="EN-US">10mV/1kHz</span></p><p class="MsoNormal"><span style="font-family: 宋体;">额定输出:</span><span lang="EN-US"> PRE OUT</span><span style="font-family: 宋体;">:</span><span lang="EN-US">0.84V</span><span style="font-family: 宋体;">(输入</span><span lang="EN-US"> CD 125mV</span><span style="font-family: 宋体;">)</span></p><p class="MsoNormal"><span lang="EN-US"> </span></p><p class="MsoNormal"><b><span style="font-family: 宋体;">整体性能</span><span lang="EN-US"></span></b></p><p class="MsoNormal"><span style="font-family: 宋体;">信噪比(</span><span lang="EN-US">A</span><span style="font-family: 宋体;">网络):</span><span lang="EN-US">PHONO</span><span style="font-family: 宋体;">(</span><span lang="EN-US">MM</span><span style="font-family: 宋体;">):</span><span lang="EN-US">89dB</span></p><p class="MsoNormal"><span style="font-family: 宋体;">(输入端子短路,</span><span lang="EN-US">5mV</span><span style="font-family: 宋体;">输入信号)</span></p><p class="MsoNormal"><span lang="EN-US">PHONO</span><span style="font-family: 宋体;">(</span><span lang="EN-US">MC</span><span style="font-family: 宋体;">):</span><span lang="EN-US">74dB</span></p><p class="MsoNormal"><span style="font-family: 宋体;">(输入端子短路,</span><span lang="EN-US">0.5mV</span><span style="font-family: 宋体;">输入信号)</span></p><p class="MsoNormal"><span lang="EN-US">CD</span><span style="font-family: 宋体;">,</span><span lang="EN-US">TUNER</span><span style="font-family: 宋体;">,</span><span lang="EN-US">AUX</span><span style="font-family: 宋体;">,</span><span lang="EN-US">NETWORK</span><span style="font-family: 宋体;">,</span><span lang="EN-US">RECORDER:108dB</span><span style="font-family: 宋体;">(输入端子短路)</span></p><p class="MsoNormal"><span style="font-family: 宋体;">音调控制:</span><span style="font-family: 宋体;">低音:</span><span lang="EN-US">100Hz </span><span style="font-family: 宋体;">±</span><span lang="EN-US">8dB</span></p><p class="MsoNormal"><span style="font-family: 宋体;">高音:</span><span lang="EN-US">10kHz </span><span style="font-family: 宋体;">±</span><span lang="EN-US">8dB</span></p><p class="MsoNormal"><span lang="EN-US"> </span></p><p class="MsoNormal"><b><span style="font-family: 宋体;">一般</span><span lang="EN-US"></span></b></p><p class="MsoNormal"><span style="font-family: 宋体;">电源:</span><span lang="EN-US">AC 220V</span><span style="font-family: 宋体;">,</span><span lang="EN-US">50Hz</span></p><p class="MsoNormal"><span style="font-family: 宋体;">功耗:</span><span lang="EN-US">295W</span></p><p class="MsoNormal"><span style="font-family: 宋体;">待机时功耗:</span><span lang="EN-US">0.2W</span></p><p class="MsoNormal"><span style="font-family: 宋体;">产品规格及设计若因改进而有所变化,恕不另行通知。​</span></p>https://s3.cn-north-1.amazonaws.com.cn/dm.firmware.cn/Denon%20CN/PMA-1520AE/PMA-1520AE_manual_cn.pdf~说明书 PDF 3.3MBFalse