I don't see the Phrase Looper in the Reface series get a lot of love, and I think that's a shame. It's a really interesting feature and I find incredibly useful. It has very nearly replaced a loop pedal in my setup. There are just a couple of features (that may be impossible to implement) but I wanted to throw them in here anyway, I hope this hasn't been covered a million times:
Looper Control from MIDI CC and/or Pedal Input
I would be absolutely thrilled if the Looper controls (Start / Stop / Pause / Rec) could be controlled via MIDI CC or even Sysex. For me, I would really like to control this feature with a pedal - and could hack together something that would turn pedal inputs into Sysex or MIDI CC. Additionally, if there was some magic way of having a momentary switch pedal (like an FC5) work in the sustain/volume input control looper functions that would be even better, although it might be awkward. An example workflow could be:
1. Click once while stopped with no phrase to start in record mode
2. Click while playing to stop
3. Hold while stopped to clear
4. Hold while playing to "overdub"
Control Send/Receive Start/Stop Commands
I use my Reface CS as my primary MIDI controller, but unfortunately if I have other devices with sequencers in my signal chain the Looper sends Start/Stop realtime messages messages to those devices if I use the Looper on the CS. I would love to be able to turn this feature on/off, so that I can run the sequencers of each device independently. I tried filtering realtime messages out with a MOTU MIDI Timepiece AV, but unfortunately that filters clock messages out and I LIKE having my CS be the clock master (believe it or not, I love that the tempo is a fader!).
I have no idea what the viability of these features are from a technical perspective, and I might be a fringe user. Thanks for listening!
Please keep up the good work, these synths are absolutely incredible.