纯甲类小“胆”机张义方“胆”（电子管）功放以浑厚、柔顺、甜美之靓声，赢得了越来越多的“发烧友”之青睐。本文介绍的“小胆机”具有以下特点：（１）电路简单。整机只用了两枚电子管，固而符合“胆”机“简洁至上”（ＴｈｅｓｉｍｐｌｅｉｓＴｈｅｂｅｓｔ）的设计原... Pure class A small “gall” machine Zhang Yifang “Gall” (tube) amplifier to vigorous, supple, sweet sound, won more and more “enthusiasts” of all ages. This article describes the “small tube machine” has the following characteristics: (1) the circuit is simple. The machine uses only two tubes, solid and consistent with the “gall” machine “simple first” (ThesimpleisThebest) design of the original ...