return of gearweigan its seems the creep of gearweigan back into the article has begun in simplest terms distortion was caused by pushing the biasing voltage ac swing higher than the maximum power the amp itself could provide sorry but those aren't simple terms only someone versed in electronics geekery will be able to parse biasing voltage ac swing higher this is an encyclopedia article meaning it is intended as a first introduction to this topic a lot of work was put into editing the gearweigan out of the article so let's not put it back in