I'm looking for a booster pedal to place at the end of my signal chain that I can use for a lead/solo boost, but that also acts as a line buffer when it's OFF. I'm not looking for a single knob booster where you turn the knob down and just leave it "on" all the time, because that's not helpful. I want to be able to turn it on for the volume boost for a solo. That's why I need a pedal that still buffs when it's "off." Any suggestions? Thanks!