hg_man
Well-known member
I am modifying a Raven Labs PMB-1 for three (yes, three) piezo pickups - one on the pickup/inst channel, one on the mic channel, one on an extra preamp board that I built. I'm also designing my own 3-input (or 4-input) mixer for installation in an electro-acoustic hurdy-gurdy. I've read that piezos need a really high input impedance, like 5-10M. I've also read about the advantages of using a FET input stage, and the PMB-1 just uses op-amps. Which way should I turn here? Your comments are appreciated. I can post the circuit if people are interested.
Alden
Alden