Presonus MP20 Schematic

[GeezerTech]

I have two Presonus MP20's on my to-be-repaired shelf and I'm trying to close up my house and shop and call it a career. I've repaired a few of these things in the past by hacking my way through IC spec sheets and some luck. I'd like to get the job done quicker and more efficiently. Does anyone have  a schematic for this preamp and, if so, would you share?

thanks,

Thomas Day