I've been doing a lot of researching on the simple rangemaster circuit and I think I will settle on building this particular one. Not quite the original circuit, it does have a switch for a flat frequency style boost. My thing is, I want an Led and a power jack, but where do I cut in to install these? I do understand that you usually get all of your highs when using a cheap non alkaline type battery, but I wanted to see how it sounded with the voodoo labs battery sag power supply from my Mondo. Thanks in advance for any assistance.