Thanks for the answers, I'll try to evaluate the Op-Amp in a preamp. The application is a boom mic for HAM transceiver so it doesn't have to be Hi-Fi capable. Thanks, -- Chetan Bhargava Web: http://www.bhargavaz.net Blog: http://microz.blogspot.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist