Our beloved big chocolate point male had a loud purr like that. My mom used to ask me to get him revved up and put him on the phone so she could hear him purr. It was wonderful.Oh yes. When she purrs, it sounds like an idling chain saw!
It's funny, but when Prancer or Stretch purr, it is barely audible; while Burdock, Bashful, Digger or Miss Eleanor can be heard even if they are in another room. Go figure.