For the modular stuff I have a few outboard sequencers which either run in USB sync or I use a midi-CV interface. Interfacing the Eurorack and Dotcom stuff is easy, but some of my older synths like Yamaha CS-15D have a few issues following the normal Gate-signals, so my tech built me a Eurorack converter module so it can speak with the outside world.
Klas
Blackhead Studios | Berlin