I was going throught my old Arp service notes looking for modifications for the 39OO filter and found this one for all units on "Line voltage diviations". Looks as relevant to all synthezizers now as when it was written in Feb. '95. Thought I would share it with you...:) http://www.tomg.vivid.net/misc/pd.zip 56K contains a (1meg 3000X2000 aprox) windows bitmap scan. -tg