Unverified80% confidenceFactTime unknown
纯甲类（Class A）耳放动态与音染更佳但发热大、能耗高、体积大；AB类兼顾效率与音质，是台机主流；D类效率最高适合便携，三者驱动同一耳机听感取向不同而非绝对高下
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80%
Confidence
Long-term
Relevance
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