Your post got me worried. I remember when I consulted you about this burn-in procedure, you told me I can hook the NOH on my FryKleaner with a pair of ICs from the output of the FryKleaner then another pair from the output of my NOH to the FryKleaner's reverse output having the FryKleaner in full-strength (+10mv) and the NOH's volume control to the max. Did I caused a problem on my NOH by doing the above for 200 hours? How will I know if my Tx 102s are magnetized? They sound great anyway. Godspeed.