This is what I have found regardless of what Outlaw told you.
Leaving the delay and gains on the 990 at anything but zero changes the sound. When the OPPO is doing everything and the 990 is simply passing the 7.1 OPPO output to to the amps there is clearly an improvement in sound. The sound has better low level information.The sound is also simply cleaner. Playing my other sources with these settings DIRECTV,Coaxl,analog and fiber optic dont sound right. Sound is thin a hollow. Is this because the 990 is playing everything full range.If the sub setting is set to LFE with the speakers full range than am I correct in there will be no sound coming off the sub at all for any of these sources.If this is correct then my speakers have no protection from low frequency damaging signal. Is this correct. Im still not getting it.