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胆前级到底有没有用？加与不加的区别，到底有多大？实际听一下！
电子管前级，又称为胆前级，它有没有必要买呢？对音质提升大不大呢？很多朋友都有这个疑惑，那么今天我就来给大家说一下这个事情。
试听对比.亲耳聆听56/152
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