From tande.adamson@btinternet.com Mon Aug 13 08:07:24 2012
Subject:Re: Emu b3

Hi Ken, as the B-3 module doesn't react to expression ( as in it doesn't
add more tube distortion when more gas is applied ) the simplest way to
deal with your situation is to run the B-3's L/R 1/4" jack outputs
through an in-line stereo volume pedal and then into the Tyros,s stereo
inputs.
4 mono 1/4" cables required
I have used this method recently with the output from an Ipad's Garage
Band into a Casio WK7500 and it works fine.
I bought an ultra cheap Bespeco to test it out, and so far it's working
well.
http://www.h-online.com/priceinsight/eu/530388#ang

Thomas