"Won't Work" may be a little harsh -- I have an MB-1 but can't put my hands on the manual for it. Basically, what you would want to find out (unless Dino knows the specs of the ADA) is the input impedance of the MB1. If it is 1 megohm or more, you're ok.
What he is probably addressing is the impedance mismatch of piezo pickup's ultra high value into a traditional bass guitar amp's input, which is looking for a much lower impedance value.
There is an explanation of the situation at the bottom of my Preamps Page -
http://www.gollihur.com/kkbass/preamps.html
This mismatch would only be a concern if the piezos are directly outputted from the instrument, to be plugged into an amp - if the bass has an onboard or outboard preamp that buffers the signal, it shouldn't be a problem.
I hope the Preamps Page -
http://www.gollihur.com/kkbass/preamps.html helps you understand the issue, and I'll be happy to explain further or speak to the equipment you have (especially if I can find the damn manual!! <g>)
