The channel strip sounds great. I only used real SSL, Trident and NEVE consoles so I don't really know how API console really sounds like.
So, I can't comment if it sounds like the original.
UI can be improved, should be resizable and less dense.
Could use variable attack for the dynamics (unlike the original but why not?)
And maybe indication of the selected frequency in the parametric EQ module. even a little red line under the value would make it much more easy to understand what frequncey is chosen.
Overall I really enjoy it and it gets used in every project.
Cheers,
Oded.