I was recently given an original Q-Tron by a friend of mine. With all of that empty real estate inside the case I was thinking that it would be great to add a volume control to it that would only be active when the effect is on. That way, I could dime my guitar in order to provide enough juice to open the envelope and yet have the volume level where I need it (clearly, I don't have an OBEL in my guitar).
Has anyone done this before? If so, could you share with me how you did it?