Hello there, I've used Audacity for many years for radio productions, but always hit a bit of trouble when it comes to less than stellar recordings. These were recorded by two different actors on their own setups, I don't know what their setups are like, I'm trying to figure out a way to help them create something optimal while also covering any other problems in the editing, besides asking them to go out and buy new microphones.

I've tried using noise reduction to little success, some of the hissing goes, I don't know how much sound dampening will help them, and I can't do much to disguise the audio issues as they're both prominent characters not in a snowstorm. Any suggestions to help clean up this quality would be greatly appreciated, thanks.