Thanks for all of the replies - the clock send is definitely on. What I’ve tried so far is - MIDI straight from DT into 404 with two different TRS adapters, no luck; MIDI straight out of DT into Microcosm, which seems to be working. Microcosm also seems to be working with the thru-5 box, so it seems its an issue with the 404. It is set to MIDI Sync: MIDI …? so I am unsure what I’m missing here… seems it’s most likely that my TRS adapters are both type B maybe. I know at least one of them works well with the Microfreak (which takes type B), as I’ve been able to send MIDI info to it from the DT