My AG-HMC150 works well for recording church services. We have a sound board that inputs the audio into the 150 via the two XLR input jacks. I would like to now purchase a portable sound board that has the ability to input audio into the 150 like our current setup. I was looking at something like the Yamaha Stagepas 300, or the Fender Passport 300, but did not know if they would have the proper output or even have the correct output jacks. Anybody have a suggestion - preferably with some experience with the camera and the portable unit.