Ok, I've got an old Audio-technica Model AT835b shotgun mike. It's always worked well but the one page manual is lacking in detail.. For example it say's you can either use a 1.5volt AA Battery or Phantom Power. Is that automatic? I have just put a new lithium AA in to the Shotgun mike and would like to save on sucking power from my battery on the camera therefore turning off the Phantom power switch on the camera... However there is also a tiny little slide switch on the AT835b. What is THAT for?
Thank you in advance.