Check the listing for details. 4-Step CV Sequencer (Handmade, Rucci). Condition: New. Listed at 75.00 USD. This is a 4-Step CV sequencer that outputs a control voltage from 0 to 5 volts. This is used to manipulate other equipment that utilizes CV input. Here is a video demo (of the 8-Step version)...youtu.be/ERAB0F-OqM8 You have control over the speed of the sequencer as well as the voltage of each step. This will also sync up with other devices that make use of 5volt clock. There is a switch to start/stop the sequence and a button to manually step through when stopped. All jacks are 1/8" (3.5mm). The CV output is separated from the sync jacks. It has a sync input and two sync outputs, one that outputs a clock pulse for each step and one that outputs one pulse per full sequence. This allows multiple units to sync up either step for step or overlapping. Sync in is closest to the DC input, in the middle is the sync out, and closest to the CV output jack is the sync out with one pulse per full sequence. It is housed in an extremely tough, raw aluminum case. It is powered by an included 9volt battery or any 9volt center-negative DC adapter.