PDF warning: http://www.stlouismusic.com/downloads/division_logos/Schematics/Ampeg_Schematics/SVT2PROA/ That's from the mother-company site to Ampeg. There are currently no links to this info from the Ampeg site, and no obvious links from St. Louis Music company's site. I figured if I was looking for this info, then someone else probably was too. There's other schematics also. You can also call 1-800-738-7563 or 1-314-569-0141 and they will take down your name/address and mail you a hard-copy. I ordered one today. There are older Ampeg schematics available at: http://users.aol.com/bluemuse/ampeg.html but that site is supposedly scheduled to move here: http://www.unofficialampeg.com/ For archival purposes: if the above link disappears at some point, I have the SVT-2 Pro PDFs if someone wants them e-mailed.