The A-161 is an eight step clock sequencer which is internally connected to the clock divider (A-160). Eight outputs are sequentially switched by the clock signals from the A-160 and can act, for instance as a sequential rhythmic triggers for an envelope. The reset on the A-160 also works on the A-161 (instant return to step 1). In combination with a mixer (an A-138 for example), short analogue sequences can be generated.
The A-161 requires an A-160 and must be positioned next to the A-160. Without the A-160, the A-161 will not function.