Erfurt from Xaoc Devices is a device of the Leibniz subsystem that can be used as a clock and audio frequency divider with 8 outputs, as a bidirectional binary counter or as a programmable digital oscillator.

In single mode, the state of Erfurt changes at each pulse of the clock inputs and 1, so that it counts in a cycle from 0 to 255. This results in the signal frequency divided by 2, 4, 8, etc. up to 128, which is available at the individual bit outputs. Depending on which clock input is used, the clock patterns correspond to the so-called mathematical or musical divisions of the rhythm. In short, Erfurt can also be used as a sub-oscillator with eight different frequency taps; more than the square waveform of an analog oscillator is not necessary.

In conjunction with other Leibniz modules, Erfurt can play various roles, eg. it can sample waveforms in Jena, generate stepped voltages useful for interesting glissandi with Drezno and arbitrary VCOs, generate gate patterns that liven up the spectrum of Odessa harmony banks or drive envelopes and drum modules, generate pseudo-chaotic sequences when fed back into Lipsk, etc.