I use the Crumar Eleven to primarily connect a Crumar Mojo Classic to a Leslie 771. At first, I was quite disappointed that my Crumar Mojo Classic does not come with an 11-pin connector for the Leslie; HOWEVER, now that I have the Crumar Eleven, I've really come to appreciate the ability to use the Eleven for more than just my Mojo Classic. I've been having a lot of fun connecting my Yamaha Reface YC, my Nord Stage 3, and also my guitars into the Leslie. The MIDI connection from the Mojo into the Eleven works great. Not only can I can control the Leslie speed through the Mojo 1/2 Moon switch via MIDI but I can also connect the 1/2 Moon switch directly into the Eleven as well. The only complaint I have (and request for a future enhancement) is to add a MIDI Thru port in the Eleven. Without it, it is not flexible to drive the Eleven MIDI and other devices I would like to control with the Mojo (and yes, I do use my Mojo to control other devices). Also, Thomann is absolutely great!!!! They make it easy to purchase gear, even though I am outside Germany - Thank you!!!