You’d have to do some expe

You’d have to do some experimenting to see just how well it works, but I’d say you stand a good chance of using this inexpensive splitter to get the job done. It really depends on the mics and the specific camera and its audio circuits just how well it works for you.

There are also boxes like those made by BeachTek – active and passive – that offer a bit more control over what happens. You might go there and check things out if you don’t mind spending quite a few more bucks, comparatively speaking.