和田茂氏胆前级电子管在音响应用方面 ,最简单又最实用的莫过于作前级放大 ,因为前级不需要昂贵又复杂的输出变压器 ,同时也由于它需要的工作电源电压高 ,这使得讯号的放大倍数较大、动态裕量高 ,即使是放大到几十伏电压也不会因为供电电压的限制而造成削波失真。我十年前的音 Hetian Mau gall bladder tube before the audio applications, the most simple and most practical than for the pre-amplification, because the former does not require expensive and complicated output transformer, but also because it requires high operating voltage, which makes Larger signal magnification, high dynamic margins, even if the voltage is amplified to dozens of do not because of the supply voltage limit caused by clipping distortion. My voice ten years ago