Braintree56 has released a video about the Doepfer A-155-2. This 8-step sequencer includes interesting features such as ratcheting and various running directions. The sequencer is ideal for those who want to control their sequences immediately. You can store up to eight presets (without the knob positions). The combination of different play modes, limits and ratcheting allows you to create complex sequences. The video also demonstrates how to use the module as a graphic VCO, which can produce some really interesting sounds. A 1U version of the sequencer (A-155-3) is also available.

You can find more information about the module here.