"The difference you hear with more/higher Class-A bias, is an easier, smoother, richer presentation to the sound, that’s no less dynamic and yet makes the speakers disappear, even as the music goes louder. And as a result the sound washes over you rather than being fired at you from the drivers, and that is the result of the lessening of the class-B xover distortion when you engage more and more Class-A bias."
That has been my experience as well. I experimented with various bias currents in my Integrated Amp and the sound quality improved considerably with higher values. The music had more body with a richer midrange, which was quite noticeable at low (SPL) listening levels. Nelson Pass talks about this in his "Leaving Class A" article.
That has been my experience as well. I experimented with various bias currents in my Integrated Amp and the sound quality improved considerably with higher values. The music had more body with a richer midrange, which was quite noticeable at low (SPL) listening levels. Nelson Pass talks about this in his "Leaving Class A" article.