Yes, if the bias mismatch per side is dramatic enough, the tone will be affected.frank9310 wrote:Hey Steve, another thing that happened by accident is one of my KT66s burned out as a result of me not having my speaker lead fully plugged in (I think). So I popped another one in and when I measure on CON 1 & 3 they were very different in measurements. Do you think that could also cause it to sound that way?