I was thinking of building a multichannel gainclone amp using bridged LM3886 chips. Normally you have to run one chip in inverting input mode and the other in non-inverting mode using .1% resistors to get the gain equal in both halves of the bridge. OR, you can get balanced differencial drive some other way.

SO I was wondering if one could use the balanced preamp output of the 990 to directly drive a pair of amplifiers in bridged output mode. Some of us may have a few mono-blocks not being used that could be bridged if this trick would work.