The A-161 requires an Clock Divider A-160 and has to be mounted directly to the right of the A-160.

Eight outputs are sequentially switched by the clock signals from the A-160 and can act, for instance, as sequential rhythmic triggers for an envelope. The reset on the A-160 also works on the A-161 (instant return to Step 1).

The low/high levels of the output signals are 0V and about +10V.

In combination with a mixer (A-138) short analog sequences can be generated.