Unfortunately I’m and EAC user, rather than a DB poweramp user. And EAC will sometimes display this flag for each track, IF your drive is capable of identifying it (many don’t, from what I understand). This flag appears in one of the far right columns for each track in EAC.
Personally I’ve found that EAC correctly identifies about 50% of my pre-emphasis CDs with my chosen drives. I believe that I’m only seeing the TOC flags with it though, so the other 50% probably have subcodes which my drives don’t recognize.
I’ve read that DB Poweramp can do all of this as well. But not being a user of that program, I can’t swear to this feature.