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# AUMatrixMixer Parameters

## Topics

### Constants

[`var kMatrixMixerParam_Enable: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_Enable)

[`var kMatrixMixerParam_PostAveragePower: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PostAveragePower)

[`var kMatrixMixerParam_PostAveragePowerLinear: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PostAveragePowerLinear)

[`var kMatrixMixerParam_PostPeakHoldLevel: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PostPeakHoldLevel)

[`var kMatrixMixerParam_PostPeakHoldLevelLinear: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PostPeakHoldLevelLinear)

[`var kMatrixMixerParam_PreAveragePower: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PreAveragePower)

[`var kMatrixMixerParam_PreAveragePowerLinear: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PreAveragePowerLinear)

[`var kMatrixMixerParam_PrePeakHoldLevel: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PrePeakHoldLevel)

[`var kMatrixMixerParam_PrePeakHoldLevelLinear: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_PrePeakHoldLevelLinear)

[`var kMatrixMixerParam_Volume: AudioUnitParameterID`](/documentation/AudioToolbox/kMatrixMixerParam_Volume)


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