Hello Dave,
Your shared insight probably saved me from trying to figure out why I encounter hear "hissing" with the lesser sensitivity setting (of +4 dB). (Also, I would have made the mistake of thinking the -10dB was the lesser sensitivity.)
I do have a follow up question, but since the topic is drifting from the original thread heading and my additional question may benefit others (by community input), I'll post it under Newbie. I'll look for your comment there, if so offered.
Greatly appreciated, JeffF.