How necessary is a zerostat gun?

Not needed unless you get a lot of static. Doesn't work on children.

I have the Ionoclast and use it regularly on vinyl and cd/sacd/dvd-v and dvd-a. Since you can hold a cd in your hand while using the Ionoclast it is possible to feel the difference in static release. It makes the whole front end smoother and it makes me feel better. Just part of the process. Listen every day.

I hope not very.

Haven't used one in 30 years.

Lloydc it can be used as a child prod!!!

Another no user here. Mine has been sitting in my cabinet for 2 years now unused. You'll know if you need one.