请问NAC72前级内的模块的功能和作用.
NA323 K/S Phono MC
NA322 MM Phono (这两个是唱放)
324 (tape out buffer)(磁带输出缓冲)
328 (Variable Level Line input with some HF filtering)
729 Time-Aligned input buffer boards
321 Main Gain, Output Drive(主放大)
325 Switch on relay(输出延时)
还有几个不知怎么翻译,如果只是用来听CD,可否只要用321,325和几个跳线CAR就可以了,其他可拨走.