Yes, you can install only the Hexpander, and you will get MIDI out on a 13-pin jack (hex output, a filtered analog signal). With the addition of the BE-0182-G0 Mag to Pin-7 harness, your mag signal gets delivered to pin 7 of the 13-pin connector. Most MIDI converters have two 1/4" outputs on the back -- one for the MIDI signal, and the other for this pin 7 signal. You can process these signals separately at this point.