Afaik, there are no audio techs near Roxboro.
He can come to my G2G in Apex on Saturday where the best tech in the universe (Sol) will just happen to be that day.
Or he can drop it off to me in Apex before Saturday. We'll fix it for free.
Erstwhile, another good retail tech is Alex Lok.
http://www.theanalogstore.com/in Four Oaks, NC
There may be other techs in the Triangle area, I'm not familiar.
What make and model preamp is it?