I have not been able to use the hum filter to advantage without affecting the quality of the recorded material. The hum is probably present due to a "ground loop" or other bad connection (60 cycle) and is not severe but can be noticeable. Using the hum filter usually degrades the recorded material somewhat. I have not attemted to use the graphic equalizer feature but have "played with it". Any advice is welcome.
Stan (citguy)