zenith2134 Jun 11, 2010 Hey there, yes in fact my B&K 500 lists the 12AX7. Sensitivity setting on mine is listed as 95 with of course a 12v heater. Good luck
Hey there, yes in fact my B&K 500 lists the 12AX7. Sensitivity setting on mine is listed as 95 with of course a 12v heater. Good luck