Wayne; Glad you have found the time to accomadate with good information on the ksn 1038. Quick question, what is it about certain amplifiers that would cause them to oscilate with the piezo? And does phase shift due to capacitive load account for that shattered sound they somtimes exhibit? This type of discussion is invaluable with knowledgable people please keep indulging us as time permits. Does the 22mic. resistor eat up ampower. My poor experience with them may be due to years of listening to solid state pro-amps. Thanks J.R.