Depends on what you are connecting to on each side of the converter and what you want to put through it (what type of audio content) and the resulting experience you want to get. In other words, ...

I am looking to connect my amp AIYIMA A07 to my TV Hisense 55hg8 h8g. Only problem is that the TV only has a output audio port using digital audio out with a optical cable. The amp only takes rca in.