Peavy KB300

Your control is Peavey part number 71190522, hence the #522 printed on it. As far as I know the 31190522 would also work. I may be wrong, but I think the difference between 71190522 and 31190522 is where the part came from.
this part is a volume control pot on the front of the amp.
thank you in advance

Welcome to the Technical Forum. I could not find a lot of information on that Potentiometer. Though this is the closest I believe we have. It is part number 987-1298-ND on this link:

I did not find one with a bracket like the Peavey model. You can review this one to make sure it will work.