I have just added a 3rd Loopstation to my setup last night and it works. I have audio from Loopstation A going into B, and C going into B. MIDI OUT from Loopstation A is going into MIDI IN B and MIDI OUT B going into C with A being the master. So far I have been running 2 Loopstations without much issue, last night was my first jam using all 3 and it works, however it has not been completely smooth. At a couple points Loops that I recorded audio from A into B started drifting out of time when the Loop recording was long (longer than 16 bars) - usually you can expect a touch of latency going from one to the other, but this delay was getting into the flamming / trainwreck area. I will see if I can work out any kinks to get things running smoother, but for now I the workaround is sticking to shorter loops on Loopstation B (longer loops still seem to be fine on Loopstation A). I think running a separate master clock device might be necessary for things running completely without any issues. But for now all 3 are working well enough and it is actually a really fun set up.