I just upgraded from the STR-DB1040 to the 1080.

Has anyone found that the Sound Optimizer function of this amp actually works properly?

On the 1040 there was a very noticeable difference between the Optimizer being on (in normal and low) and off,  for listening at night, whereas the 1080 the setting doesn't seem to make any difference and there is still quite a large dynamic range. The DRC function also doesn't seem to help but I understand this is only for certain Dolby Digital content.

i have seen someone else mention this too on the AV Forums...