Lew, as I said, it seemed unlikely that the impedance mismatch would cause the
On the EAR phono stage when low gain (MM) is selected the input impedance is fixed at 47K and cannot be changed, except by selecting high gain (MC) where the input impedance is, again, fixed at 470 ohms, set by adding a 1:10 transformer ahead of the tube stage.
OP, it is not a waste of anyone’s time as some of the suggestions will help the next person with issues. Everyone here was just trying to help. We have all done it, glad you got it sorted; that’s what it is all about. Enjoy the music.