Generally speaking when we talk about biasing an amp we’re specifically referring to the output/power tubes. However there are some applications where specific pre amp stages may have adjustment or […]

Very few guitar amplifiers are strict Class A. If you have a guitar amp with one power tube, which is known as single-ended, it’s Class A by default. This would […]

Lost Vacuum: As the name implies vacuum tubes are built in such a way that the inside of the bottle (generally glass but in some vintage tubes can be metal), […]