zoom ac2

Hello, I've read you a lot since few weeks, about the gear used to "embellish" a piezo sound. With your help, I've discovered that the first point is the input impedance and the importance of a good DI or Preamp dedicate to piezo pickup. Last time, I've use a zoom b1on with my double bass...

I have an EUB with a passive pickup, and was using a Behringer AD2 acoustic pedal(which I already had). It worked well unti I hit a room and a volume that the piezo pickup didn't like. So I start using a Zoom A2(already had too),the predecessor to the AC2. It was made for acoustic guitar. I...