Oh....also, my run from amp to pre is less than 2 feet - so I'm not really concerned about balanced outputs. Especially since I don't believe that the 990 is balanced all the way through - that's usually an expensive option.

Also, I haven't ever explored separate crossovers for each channel as the Ref 31 doesn't allow me to do that anyway. Not sure if it would make a difference in my system. It's been at 80Hz for several years and the DEQ2496 is balancing the subs....