These will be very hard to find. Mike E. kept all his schematics close and when he stopped and closed the business at Alta Vista Audio he had a person that if you needed parts for upgrades or schematics you had to go through her. Since the website is no longer up that contact info is lost. Hopefully a former service tech for Counterpoint Products still has some. I know there was a guy over on the diyaudio site (Anatek) that used to be a service tech for Counterpoint. Look him up and hopefully he can help if he still around.