Doepfer A-154 Sequencer Controller.
Expansion module for the A-155 sequencer with following operating modi: forqward, backward, pendulum, random, voltage controlled and one-shot.
The first and last step of the sequence as well as tha step lenghth can be set by a control voltage. Integrated clock generator.
Two A-155 can be controlled with the A-154 so sequences with 16 steps can be created.