As mentioned in the above description, Erfurt can be used as digital oscillator who's output can be processed by the digital-to-analog converter on Xaoc's Drezno, a companion module in their Leibnitz system. If you're curious about just how that can sound, this fully produced works utilizes only the Erfurt-Drezno combo as a sole sound source. Further notes, and links to helpful videos are in the description.
NEW EP: https://fastus.bandcamp.com/album/terra-incognito
Latest works: https://soundcloud.com/fastus
Modular studies & sketches: https://soundcloud.com/problivion