I don’t use dynamic mikes – have no need for them. Which are you using and for what purpose?
I have exactly the opposite problem. I am typically recording in a high SPL environment with sensitive condenser mikes and in order to get to a reasonably adjustable gain range on my MixPre-D have to pad heavily – think -10db on the mike and -20 in an inline pad. Sometimes even more.
I’m curious about the mikes and situations you’re having this trouble with – seems to me such insensitive mikes are going to have all manner of self-noise.
Btw…are you sure you’re even having a problem? Have you tried boosting your levels in post? I usually record with peak gains at a max of -12 db (and usually lower) so I can EQ and normalize in post without having to compress.