I would try an aftermarket powercord. I use the Elrod on my AA Capitole. Not sure about the Prima. Power cords tend to be used these days as tuning devises. I know my Audio Aero w. out the Elrod can be less than musical & slightly harsh. With the Elrod everything snaps into place. On another note,you will need time to let everything settle down to hear the benefits. Although you will hear a change right away,the long term listenability will be the ultimate decision maker.
One last guess, is the Primas tubes might be noisy. It can happen.
Elrods come up used quite often here.
One last guess, is the Primas tubes might be noisy. It can happen.
Elrods come up used quite often here.