=20 > barefeet in salt water + wet hands and 48V DC is marginally > possible to be needing immediate medical assistance. How about LVDC (5V ? 12V ?) down the mic cable and a small SMPS step-up at the mic --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .