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multiple audio interfaces - how to select?

wagdogwagdog
in Loopy Pro

Greetings all,

Very new to Loopy Pro, but very much enjoying it. This is one of the greatest iPad apps I've ever used, it's absolutely amazing.

My question may be more of an iPad/iOS question, but it does relate to my use of Loopy Pro.

My setup is: Livetrak-12 mixer as an audio interface. Bass, Guitar, Keyboard (Yamaha MX49), Vocals all going into the mixer. Mixer connects to a powered USB hub, which is plugged into a 9th gen iPad running iOS 18.5. Also going into the USB hub is a Morningstar midi controller, a Korg nanoKONTROL2, and the Yamaha MX49.

My thought was to run the audio from the keyboard into the mixer, but also use the keyboard as a midi keyboard for various iOS based synths.

The problem lies in that sometimes the iPad picks the mixer as the output device (that's what I want):

but sometimes it picks the keyboard:

There doesn't appear to be a way to manually select which one I use for the output? Is there a way to do this?

If I disconnect the keyboard from the hub, it will switch to the mixer, but as soon as I connect the keyboard, it switches back to the keyboard. It works in the opposite fashion if the mixer happened to be the interface that was selected.

Also, in loopy pro, I see these options for inputs:

I believe I could take audio direct from the MX keyboard via USB, however I can't select "Yamaha MX Series" from that list, it always defaults back to "ZOOM L-12 Driver". I can select "iPad Microphone" though.

I see no way to select one of the two outputs in Loopy Pro either.

I'm not dismissing that I missed something obvious. Any help appreciated.

Comments

  • yellow_eyezyellow_eyez

    ATM only Logic can allow multiple interface selection - hopefully Apple will open this feature to LP and other DAW/app but until then - it’s last one in will be your I/O

  • wagdogwagdog

    @yellow_eyez said:
    ATM only Logic can allow multiple interface selection - hopefully Apple will open this feature to LP and other DAW/app but until then - it’s last one in will be your I/O

    huh, well, darn it! I thought I was missing something obvious. Thanks for the info!

  • wimwim

    @wagdog - sorry, only one interface at a time. Last one plugged in or turned on wins. Unfortunately there’s no way around that (except for in Logic Pro as mentioned above).

  • uncledaveuncledave

    Just a suggestion. You might be able to disable the USB audio in the MX49 settings. But plugging the mixer in last ought to work.

  • OptahealthOptahealth

    Yup, I have the Livetrak L-8 and a Yamaha PSR e453. Keyboard is plugged into the L-8. Most of the time the Livetrak is the audio interface, but if not I just unplug and replug the L-8 and it takes over. I can use the Yamaha as a midi keyboard.

  • wagdogwagdog
    edited July 2025

    @uncledave said:
    Just a suggestion. You might be able to disable the USB audio in the MX49 settings. But plugging the mixer in last ought to work.

    I waded through the MX49 settings and couldn't find it. Good thought though!

    @Optahealth said:
    Yup, I have the Livetrak L-8 and a Yamaha PSR e453. Keyboard is plugged into the L-8. Most of the time the Livetrak is the audio interface, but if not I just unplug and replug the L-8 and it takes over. I can use the Yamaha as a midi keyboard.

    OK, thanks for that. My USB hub has on/off switches on each port, so I may be able to just turn it off and back on again. This seems like such a basic function, I don't understand why it isn't built-in to the iPad. Anyway, I'll try this method later. Thanks again.

  • The Krazy WabbitThe Krazy Wabbit

    @yellow_eyez said:
    ATM only Logic can allow multiple interface selection - hopefully Apple will open this feature to LP and other DAW/app but until then - it’s last one in will be your I/O

    are you doing this on the new iOS 26 beta? I am aware you can do that on 26.

    Just tried and it does not work on iOS 18.5

  • yellow_eyezyellow_eyez
    edited July 2025

    @The Krazy Wabbit said:

    @yellow_eyez said:
    ATM only Logic can allow multiple interface selection - hopefully Apple will open this feature to LP and other DAW/app but until then - it’s last one in will be your I/O

    are you doing this on the new iOS 26 beta? I am aware you can do that on 26.

    Just tried and it does not work on iOS 18.5

    Oh really? That’s very cool. Did you get the beta yet to try or you’ve just heard it works , and with which apps(all DAWs?)?

    Anyone else try multiple audio interfaces in other DAW on iOS 26 beta ?

  • The Krazy WabbitThe Krazy Wabbit

    @yellow_eyez said:

    @The Krazy Wabbit said:

    @yellow_eyez said:
    ATM only Logic can allow multiple interface selection - hopefully Apple will open this feature to LP and other DAW/app but until then - it’s last one in will be your I/O

    are you doing this on the new iOS 26 beta? I am aware you can do that on 26.

    Just tried and it does not work on iOS 18.5

    Oh really? That’s very cool. Did you get the beta yet to try or you’ve just heard it works , and with which apps(all DAWs?)?

    Anyone else try multiple audio interfaces in other DAW on iOS 26 beta ?

    I did try the iOS 26 beta and was able to select different interfaces at the iOS systems level (when you swipe down to select audio source) it did not work in AUM. I did not test with any other apps and since removed the beta as it was buggy for me.

    Again, I stand corrected if it can be done in Logic Pro on 18.5 but I am unable to. I tried to upload a screenshot and it wasn't working.

  • yellow_eyezyellow_eyez

    Ty

  • [Deleted User][Deleted User]
    The user and all related content has been deleted.
  • wagdogwagdog
    edited July 2025

    Just to follow-up:

    As @Optahealth noted above, the last audio interface connected is the one the iPad uses. Fortunately the powered usb hub I’m using has individual power switches for each port. I’m able to pick which interface to use by turning that one on last. I confirmed they could be switched as well.

    I’m also able to use the mx49 as a midi keyboard and straight audio into the board/interface.

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