Walls

I'm building a new control room, and I'm ready for the walls to go up. I know that i have to treat the walls, but was wondering after they go up and the insulation is on, should I drywall everything then treat them. Or do I put the treatment right over insulation?

There are almost as many answers to that as there are words in your question - could you post a drawing of your floorplan, and some info about your situation - neighbors, sound/noise levels, type of building construction, budget, etc? It's just not possible to give one fixed answer when there are so many variables to consider... Steve