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请问下音频信号幅度提高,功放是不是也需要提高功率,还是不影响?

Other Parts Discussed in Thread: TAS5630B

我使用的TAS5630B,PBTL模式,之前音频信号声音偏小,现在将音频信号幅度提高到1.5倍,不知道后级的功放需不需要提高功率,还是音频信号幅度提高不影响后级功放,这方面知识缺乏,咨询下?