Very easy to use and although some Eurorack users like very small modules, this is a good size for real time control. Plenty of flexibility, the internal sound sources are useful, as is the MIDI interface, especially for live use, where it is not always possible to have a synth dedicated to providing these. I have used the Carrier input with a Korg Kronos and this worked well. Altogether I am very pleased with this purchase, it seems sturdy and has been a good addition to my modular setup.