# Midi Help - Using both USB and TRS simultaneously?

**URL:** <https://forum.critterandguitari.com/t/midi-help-using-both-usb-and-trs-simultaneously/8149>\
**Category:** Organelle M & S\
**Created:** [January 28, 2022, 7:01pm UTC](https://forum.critterandguitari.com/t/midi-help-using-both-usb-and-trs-simultaneously/8149 "2022-01-28T19:01:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![NealKaiser](https://avatars.discourse-cdn.com/v4/letter/n/f1d935/32.png) [@NealKaiser](https://forum.critterandguitari.com/u/NealKaiser)\
**Post date:** [January 28, 2022, 7:01pm UTC](https://forum.critterandguitari.com/t/midi-help-using-both-usb-and-trs-simultaneously/8149/1 "2022-01-28T19:01:14Z")

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Hi All, I’m pretty new to the midi world, so please bear with me!

Here’s my setup:

Roland System-8 \> TT-78 Drum Machine \> Organelle M \> Op-1

All I’m trying to do is synchronize the clock/start from the System 8 to all these devices.

I’ve got it going fine from the Roland all the way to the Organelle. But I can’t seem to get the clock to sync properly from Organelle to OP-1.

Since I only want the midi clock, I am using different midi channels. When I sync the Op1 w/ the organelle, it locks in a really fast tempo and I can’t control it from the System-8 like I can all the others.

I’m wondering if it’s because I am using TRS Midi for the Input to Organelle and USB for midi out to the OP1. Is that allowable?

Thanks!

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**Author:** ![chrisk](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/chrisk/32/11_2.png) [@chrisk](https://forum.critterandguitari.com/u/chrisk)\
**Post date:** [January 28, 2022, 7:32pm UTC](https://forum.critterandguitari.com/t/midi-help-using-both-usb-and-trs-simultaneously/8149/2 "2022-01-28T19:32:46Z")

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> [@NealKaiser](#):
>
> When I sync the Op1 w/ the organelle, it locks in a really fast tempo

This fast tempo on OP1 could be happening because of a MIDI clock loop between the Organelle and OP1. If you disable MIDI Out on OP1 do you still get fast tempo?

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**Author:** ![NealKaiser](https://avatars.discourse-cdn.com/v4/letter/n/f1d935/32.png) [@NealKaiser](https://forum.critterandguitari.com/u/NealKaiser)\
**Post date:** [January 28, 2022, 7:46pm UTC](https://forum.critterandguitari.com/t/midi-help-using-both-usb-and-trs-simultaneously/8149/3 "2022-01-28T19:46:56Z")

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Thanks. I have the OP1 in “Sync” mode which I think means it should just receive a clock but not output any midi. I’ll mess around w/ it more though.

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**Author:** ![NealKaiser](https://avatars.discourse-cdn.com/v4/letter/n/f1d935/32.png) [@NealKaiser](https://forum.critterandguitari.com/u/NealKaiser)\
**Post date:** [January 29, 2022, 9:24pm UTC](https://forum.critterandguitari.com/t/midi-help-using-both-usb-and-trs-simultaneously/8149/4 "2022-01-29T21:24:27Z")

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I think I tried every combo. Definitely seems like a clock loop. To me it seems like an issue w/ the OP-1 where it still sends a clock out even though it’s in SYNC mode. All other midi seems to pass through just fine.

If I set the OP-1 as the master for clock, it’s fine (but not what I want). Pretty strange. Even did a factory rest of OP-1. I suppose a USB MIDI host would correct it…