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TPA3116D2/TPA3118D2,音频输入端需要接运放吗?

Other Parts Discussed in Thread: TPA3116D2

1、左右声道输入时,需要把接有源滤波器把低频滤掉吗?

2、重低音输入需要接运放吗?(重低音是通过有源滤波器得到吗?)