# AudioTrack + Plugin with multiple stereo pairs

**URL:** <https://forum.juce.com/t/audiotrack-plugin-with-multiple-stereo-pairs/53882>\
**Category:** Tracktion Engine\
**Created:** [November 24, 2022, 10:39pm UTC](https://forum.juce.com/t/audiotrack-plugin-with-multiple-stereo-pairs/53882 "2022-11-24T22:39:29Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![eggnog](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/eggnog/32/12211_2.png) [@eggnog](https://forum.juce.com/u/eggnog)\
**Post date:** [November 24, 2022, 10:39pm UTC](https://forum.juce.com/t/audiotrack-plugin-with-multiple-stereo-pairs/53882/1 "2022-11-24T22:39:29Z")

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Hi,

Is it possible to host a te::Plugin with multiple stereo outputs on an AudioTrack ?  
Are the extra channels available a separate, sub-tracks too ?  
Basically just like LPX does it when you instantiate a multi-output instrument plugin.

The idea is to be able to add specific effects on these extra tracks and allow more advanced mixing.

Thanks!  
E.

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**Author:** ![eggnog](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/eggnog/32/12211_2.png) [@eggnog](https://forum.juce.com/u/eggnog)\
**Post date:** [December 1, 2022, 7:57am UTC](https://forum.juce.com/t/audiotrack-plugin-with-multiple-stereo-pairs/53882/2 "2022-12-01T07:57:23Z")

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After digging a little bit, it seems I’d need to wrap my multi-output `Plugin` into a Rack.  
Is that correct ?  
Thanks!  
E.

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**Author:** ![dave96](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/dave96/32/8487_2.png) [@dave96](https://forum.juce.com/u/dave96)\
**Post date:** [December 1, 2022, 12:20pm UTC](https://forum.juce.com/t/audiotrack-plugin-with-multiple-stereo-pairs/53882/3 "2022-12-01T12:20:30Z")

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Yes, that’s correct, then you create multiple `RackInstance`s on tracks to assign the Rack’s output channels to the instances’s stereo channels.

It sounds complicated but should be straightforward when you know what the end result will be.  
We’ve got a new feature in an upcoming version of Waveform that does this automatically for multi-out plugins which would show it nicely but the above is basically what we’re doing under the hood.

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<div class="post-metadata">

**Author:** ![eggnog](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/eggnog/32/12211_2.png) [@eggnog](https://forum.juce.com/u/eggnog)\
**Post date:** [December 1, 2022, 2:24pm UTC](https://forum.juce.com/t/audiotrack-plugin-with-multiple-stereo-pairs/53882/4 "2022-12-01T14:24:35Z")

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Perfect, thanks @dave96, gonna try this!

E.