I remember powertubes used to have these color codes for small cold/warm bias variations, Red, Yellow, Green, Gray, Blue, White. I've heard that these color codes only relates to batch numbers..
http://mesaboogie.com/news/2012/03/mesa-tube-color-codes-by-randall-smith/
Today I was told my my Mesa suplier that Mesa have stoped using these color codes. Is this true?
http://mesaboogie.com/news/2012/03/mesa-tube-color-codes-by-randall-smith/
Today I was told my my Mesa suplier that Mesa have stoped using these color codes. Is this true?