Hey everyone! I was wondering if anyone has had any experience with using a 3.5 mm trrs adapter cable in order to use an external microphone and still use your headphones? I am a music teacher and I would like to be able to record my classes with better results than I am able to get using the infamous internal mic. Also, TASCAM makes in interface module that they promote to Apple users, but looks like it would work with our A500(uses a 3.5 mm trrs plug) (with appropriate apps, of course). Any thoughts?