What is a GRID TUNE on the back of a Maverick 250 Tube Amplifier? What is it's function and how do I operate it? I would also like schematics for this amplifier if possible?

Hi,
Chances are that it is just the grid bias adjustment for the output tubes.

For a schematic, you might try some of the general designs to find the closest match, or see if this company might not have a schematic available- http://www.triodeel.com/schindex.htm

: What is a GRID TUNE on the back of a Maverick 250 Tube Amplifier? What is it's function and how do I operate it? I would also like schematics for this amplifier if possible?

: What is a GRID TUNE on the back of a Maverick 250 Tube Amplifier? What is it's function and how do I operate it? I would also like schematics for this amplifier if possible?