There are a couple issues there. First, yes, the bass management issue being discussed is I believe related largely to the analog bypass mode (haven't been all that active in that discussion, as it doesn't relate to the way I'm using the 990). Second, there is no analog bass management in the 990, so when you bypass the DSP section you must chose to either have no sub or to have double bass (the sub gets a summed full range copy of the left and right channels while left and right continue to get a full range signal).

While I am certainly very fond of my 990, I just wonder if a full-blown surround processor is the ideal pre-amp for a two-channel music system?