DualVerb combines two different high quality studio reverbs (A and B) with independent controls for decay, size, pre-delay, and EQ. Mix between both for rich, dense stereo reverberation, or use this effect to smoothly transition between two entirely different reverb sounds. It has a Reverb A/Reverb B Mix – [VRBMIX] : mixer for A and B reverbs, in stereo this mixes stereo channels, set at extreme results in dual mono reverbs (A on left, B on right).
But reverb is less directional than delay so width generation is achieved mainly with modulation. My favorite reverb for this is ModEchoVerb, though you don’t get individual channel control like you would with DualVerb. But it’s still sounds massive in stereo.