If one were to use the lower of the two, which means it would be running out of spec according to the amp, does the amp simply produce less power or will the sonic qualities suffer as well?The power will be unaffected.
Target bias dictated by amp or by tube?
If my amp's (Line Magnetic 508ia) manual says to adjust bias of each power tube to 120ma on the front meters, but a set of after market replacement tubes (Cossor Valve 508) state their bias should be set to 65ma, which stat should I be following when putting in the new tube?