Unverified88% confidenceDecision RuleTime unknown
灵敏度高（≥110dB/mW）的入耳耳塞对底噪敏感，应选输出阻抗＜1Ω、本底噪声＜2μV的DAC/耳放，避免大推力台机产生的电流声，小尾巴或专门的IEM档位更合适
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88%
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Unverified耳机阻抗需与声卡推力匹配：300Ω高阻抗大耳需选高电压输出（≥2Vrms）的桌面声卡或强推力小尾巴，低阻高敏耳塞（<32Ω）反而怕底噪需选低输出阻抗（<1Ω）型号，否则易出现声音发闷或底噪明显88% 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87% similarUnverified判断耳机是否需要耳放：阻抗高（＞100Ω）或灵敏度低（＜100dB/mW）的耳机往往前端驱动不足，会表现为音量不够、低频松散、动态压缩，这类耳机受益于耳放最明显87% similarUnverified选择便携耳放需匹配阻抗：低阻高敏耳塞选低增益档（输出电压1V以下），300Ω高阻大耳机需选输出电压≥3Vrms、输出功率≥100mW@300Ω的机型86% similarUnverified耳机阻抗≥250Ω（如HD650、拜亚T1）需选带平衡XLR输出或推力≥1000mW@32Ω的解码耳放一体机，纯DAC接RCA输出推力不足86% similar
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