It's not a wrong answer, it is one possibilty among others that had already been posted and I decided to offer something that had not been posted. I was just spitballing.
I have work in a couple of systems that had EOL monitoring and the devices used looked like amps. If someone who didnt know any better saw one out in the field and then took a class they might ask the instuctor "hey why would someone do that?" Not knowing it was for EOL SM.
At the time my second post you had not offered anything except to dismiss two posts. That's why I asked you to contibute rather than critique.
I didn't take your post as mean but condesending.
Of course I know you dont "NEED" an amplifier.
This is CABL.com posting #275338. Tiny Link: cabl.co/mbjM6