# AudioUnit Channel Configuration different from VST's
**URL:** https://forum.juce.com/t/audiounit-channel-configuration-different-from-vsts/23310
**Category:** Audio Plugins
**Created:** [July 13, 2017, 7:32pm UTC](https://forum.juce.com/t/audiounit-channel-configuration-different-from-vsts/23310 "2017-07-13T19:32:23Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@adam-eqip](https://forum.juce.com/u/adam-eqip)
#### Post date: [July 13, 2017, 7:32pm UTC](https://forum.juce.com/t/audiounit-channel-configuration-different-from-vsts/23310/1 "2017-07-13T19:32:23Z")
I loaded both the VST and AU version of my plugin in PluginHost, and I noticed something quirky:
Why are the channel configurations different between the two? (AU is on the left, VST on the right) I have the `Plugin Channel Configurations` property for my project set to `{1, 1}, {1, 2},{1, 3}, {1, 4},{1, 5}, {1, 6},{1, 7}, {1, 8},{2, 1}, {2, 2},{2, 3}, {2, 4},{2, 5}, {2, 6},{2, 7}, {2, 8},{3, 1}, {3, 2},{3, 3}, {3, 4},{3, 5}, {3, 6},{3, 7}, {3, 8},{4, 1}, {4, 2},{4, 3}, {4, 4},{4, 5}, {4, 6},{4, 7}, {4, 8},{5, 1}, {5, 2},{5, 3}, {5, 4},{5, 5}, {5, 6},{5, 7}, {5, 8},{6, 1}, {6, 2},{6, 3}, {6, 4},{6, 5}, {6, 6},{6, 7}, {6, 8},{7, 1}, {7, 2},{7, 3}, {7, 4},{7, 5}, {7, 6},{7, 7}, {7, 8},{8, 1}, {8, 2},{8, 3}, {8, 4},{8, 5}, {8, 6},{8, 7}, {8, 8}`
---
### Author:  [@fr810](https://forum.juce.com/u/fr810)
#### Post date: [July 18, 2017, 10:29am UTC](https://forum.juce.com/t/audiounit-channel-configuration-different-from-vsts/23310/2 "2017-07-18T10:29:40Z")
The VST is wrong as it is not using the default layout (the one that comes first in your list). It should be 1,1 as well (I’ll have a look why this is not working). You can change the layout by right clicking on your plug-in and selecting Configure IO…