The volume on my SuperCD started to become faint, so I just plugged into the Core instead.
Does it matter what AV you use for Hu and CD based games?
Replace the caps in the Super Cd Rom 2 if you care to,or just settle with the other AV port. Super Cd Rom 2 systems can sometimes have the same issue as a Duo,but its not as common.
You'll be fine using the AV output on the Core.
It is nice at least that you dont have as many caps to replace as in a Duo. Thats def one nice aspect of it if you decide to do so.