The preamps in the Mackie aren't in the same league as the SI given the SI 3 is like over 3 grand... you would expect something to be better...
Why does everyone assume that just because one company's console is more expensive, that the lesser expensive brand console has "preamps" that just don't measure up, or,.... "are not in the same leaque"?
Why do people judge a mixer by it's preamps. Preamps are just part of the sound even though the preamp is the first section of the console where the analog audio is injected, and is very important.
If the pramps are junk then yes, nothing after that can make up the difference.
In a sound console that is intended and designed to be used as a "live" mixer, then the headroom is equally important to sound quality as is also true in a recording studio console.
I would like to know what kind of test you did to determine that "
The preamps in the Mackie aren't in the same league as the SI"
Let's do a test, I'm up for it.
Dan