The Dark Tides isn't a typical chorus. A normal chorus is a mix of the direct signal with a modulated version of that signal. The Dark Tides when engaged has no direct signal but is two modulated versions of the origninal signal: One non-inverted, the other inverted. Each has separate "DEPTH" and "LEVEL" controls but both are modulated using the same LFO "SPEED" control. This one is defnitely a knob tweaker with all kinds of "chorus" type sounds possible. Or mute one side and it's a killer modulated pitch bender!