Actually, the Sonitus EQ is built into the Console view in Sonar 8(and SHS6)
In this view, the EQ is inactive for the left channel input track, but has been turned on for the right channel ( by clicking on the VU meter icon).
If you click on the grid panel, it opens the full view shown to the right.
For the purpose of illustration, I have created a somewhat unrealistic curve.
It's not as simple as a bass/treble control, but gives you vastly more control.
Hope that helps.