Very funky these are. Nice review. Like you Frank, I find that infinite options only offer infinite dissatisfaction. I have owned 2 filter based preamped bassses in my life. They had to go. I was so preoccupied with twiddling that I never stopped thinking about them. I know other people love the filter based preamps. They just do not suit how I percieve things. I have pan controls of several basses. I NEVER play anything but dead center. On/off buttons make a lot of sense.