The mixer settings in RME's Totalmix won't affect your input level Trock, only the volume that you hear in your speakers and/or headphones.
In Saw, when you have your record meter showing, there's an adjustment for bringing up your input level. Just left-click in the box above the word "Input" on the meter... that's whee you normally tell Saw which input device to record from.... there, you'll see what you're looking for.
It also sounds as though you're sending the wrong output level to the RME from your preamp. You shouldn't have your preamp meters in the red (or at least not clipping). Check to see if your preamp outputs have a way to switch the output level to a hotter one. Check in the RME Totalmix also to make sure the input levels are not maxed out coming in to the soundcard.
DanT
Connect With Us