Ric, the fact is that it worked just fine with the older Contra.Fran,
The Ehrlund needs an external pre amp due to it's design, I've used the pickup sucessfully with either the Headway EDB-2 or the Ehrlund Pre Amp. You won't get enough gain, running the pickup directly into an amplifier, and the tone quality will also be weird.
I've run it that way and it's less than satisfying. It isn't like a Realist or Full Circle.
Ric