8-step bipolar CV sequencer with voltage controlled stage addressing
Compact 8-step sequential voltage source in 10hp with classic forward/backward operation using a clock, and any kind of pattern you like using control voltage levels scaled to each step of the sequencer, allowing the waveform you feed it with to determine the running pattern.
http://ljunggrenaudio.com/products/sequencing.html#vcseq
Available as an assembled Module and as a DIY project.
This Module is currently available.
$259