Before you do anything else – compare this to the UAD version here.
OK, did you do it? As you can see, other than my text that I am duplicating here, there are lots of differences!
I guess Andrew Scheps’ model is different from whatever UAD used. Perhaps it has something to do with his beard. Both of these plugins sound good, I just lay awake at night wondering which actually sounds most like a real 1073. I do have to say, that 400k dip in the Waves version without even doing anything makes for a pretty sweet pre-amp sound.