然后一如既往的被kevin gilmore拿出来狂批， 但是之后kg居然自己改进电路后出了一版
增加一个2n5210来控制bias 用dc servo代替两个电容来隔直/保护
第一点毫无疑问是mikhail神(yi)来(xiang)之(tian)笔(kai)的用了三个二极管来调整bias， kg反乱拨正 第二点就比较有意思了kg的描述如下：
In fact mikhails amplifier was a fully dc coupled amplifer with a HUGE amount of dc drift over time and temperature. And the drift was not necessarily positive or negative, and it was well over 1 volt or more. So mikhail had to put in an output cap, and since he did not know the direction of the drift, he had to put in 2 caps back to back in series. But then because of the caps he picked, and the time it took them to actually charge up, he biased up the center pin, so that it did not suck so bad (meaning no bass for the first hour or so) and then told people to keep it turned on all the time.
因此kg在设计里使用了一个op2134（电路图里明显是2134,bom和别处是134）来做dc servo抵消直流 到手后准备先试试用四个4.7uf的wima替换1000uf的原装试试， 然后再改成dc式