From EEM... Apex Microtechnology Corp. 800-862-1020 5980 N. Shannon Rd. Tucson, AZ 85741 - -Mark >>> "Mark A. Corio" 11 October 1996 11:57 am >>> Several people have mentioned Apex as having high voltage op-amps (but maybe slower than I can use). Could someone point me to a contact? Thanks. ***** Designing Electronics For Research & Industry *****