Unverified90% confidenceDecision RuleTime unknown
高阻抗耳机（DT880/990 250Ω、HD600约300Ω）需要独立耳放或声卡耳机口才能推出足够音量和动态，直插手机/笔记本会声音发闷动态不足；追踪录音便携场景应选低阻抗版本（DT770 80Ω或32Ω、MDR-7506为63Ω）
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