Unverified88% confidenceDecision RuleTime unknown
低阻高灵敏度入耳（如舒尔SE846、8欧姆动铁）应关注低增益下的底噪控制，输出阻抗需<1欧姆以避免多单元动铁频响曲线畸变（阻尼系数原则：耳机阻抗应≥输出阻抗8倍）
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Unverified搭配高灵敏度多单元动铁耳塞（灵敏度≥110dB）时应关注底噪，选择输出阻抗＜1Ω的机型，否则易出现电流声和频响曲线偏移89% similarUnverified选购便携耳放前先确认底噪：高灵敏度入耳耳塞（如多单元动铁）搭配大功率耳放易出现明显嘶嘶底噪，应选专为IEM设计的低输出阻抗（＜1Ω）低增益机型89% similarUnverified搭配高灵敏度多单元动铁入耳（灵敏度≥110dB）应关注底噪而非推力，优选低输出阻抗（＜1Ω）且带增益档位可调的DAP，否则会有明显电流声和频响畸变89% similarUnverified只听IEM入耳耳塞（16-64Ω低阻）优先选低底噪机型，输出阻抗应＜1Ω，否则多单元动铁的频响会因阻尼失配而畸变，此时驱动力大小不重要88% similarUnverified灵敏度极高（≥110dB/mW）的入耳式动铁耳机不建议搭配大推力耳放，本底噪声会被放大产生明显底噪电流声，应选低增益或高灵敏度专用小尾巴88% similar
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