Welp, I was looking to add an external drum machine/sequencer at the right time, and am now the owner of one MVAVE FM1 with a second on the way. Clock drift seems wild though, trying to sync with the LP3 as well as another sequencer, have attempted both host sync with global clock send on, as well a…

For the dwarf being the clock sender I used x42 via USB to Ableton Live. For Ableton using the clock sender I set the dwarf “SYNC MODE” to “Midi” Both seemed to sync pretty well to me with a slight jitter of 0.01 BPM. I’m using my own version (with the extra midi stuff) of the Starless build but …

Right I have down quite a bit of testing and come to these conclusions. Mod dwarf being clocked externally is not good at all: Clock drift over time (a few minutes here) Clock algorithm does not adjust to clock changes well at all and gets totally out of sync. To needs you to stop and start trans…

So, I have done some alternative midi clock code which seems much more accurate in syncing to external clock, it will drift but it takes a long time to start getting noticeable, about an hour here. I’m going to look at trying to stop it messing up when the BPM changes from the user by adjusting the…

Thanks so much for your testing and responses! I have been stymied by this stuff for a couple weeks now. I’m on the DuoX mostly, though I do have a Dwarf I can dig out to test with as well-- and I feel like I read somewhere that there is/will be a Starless version for Duo X, which I should likely in…

Ah, I have not got a Duo X so it will be a bit hard to build a version for you to test (or for me to test for that matter!)

[image] New Build => MOD OS 1.14 RC5 (build 3367) Beta Testing EDIT: As of 15.10.2026 there is a new RC5 image available below here in this same topic. [mod os 1.14 RC] Hi everyone, this is the first release candidate of MOD OS 1.14 for Duo, Duo X and Dwarf…

@khz @oeSmash @AndyCap Would you guys be able to point at the reports of the issue, so that I can look into it? I see so many links and posts that I am a bit lost. Graziemille Gianfranco

Back then, I had problems when an external clock was sent to the DuoX because — as far as I recall — it wasn’t relayed to MIDI/audio programs via the DuoX. That’s why I quoted those posts from memory. As far as I understood — from two posts by FalkTX — the problem had been identified and a solution…

[image] gianfranco: Would you guys be able to point at the reports of the issue, so that I can look into it? I see so many links and posts that I am a bit lost. Graziemille Gianfranco There are two issues when synced to external clock, one is the drift, this is caused I think by the filter…

thanks @khz and @AndyCap I’ll look into it. Would you know if the problem happens in both MIDI IO’s - USB and DIN - or only one of them?

FM1 apocalypse and clock syncing

Using MOD devices Setup Questions

khz October 22, 2026, 3:52pm 12

You might have to send a request saying you want to switch to “testing.” Then you can choose which one you want to install: ‘stable’ or “testing.”

@clock
Internal → External:

External → Internal:
As far as I remember, that’s how it used to be

i have no idea if that’s changed.