What is with that? Is mine just faulty or is this a "feature" that all the Moog Guitars have?

However, I gotta say that I'm totally blow away by the sounds that are possible through the 5-pin out . . . for me it just seems to make so many filter pedals obsolete. The filter gets every sound I need, and I personally love the tone of the pickups - so much like a sweet P-90 imho.
I suppose that if I decide to keep it that I could get a volume pedal.
What do you guys think?