That’s what I am currently doing, although AudioUnitGetPropertyInfo reports the 
*maximum* property size. That is fine in order to stay save, of course. For 
arrays, as in my case, I am fishing out the relevant data using ioDataSize of 
the AudioUnitGetProperty call afterwards.

> You should be able to use AudioUnitGetPropertyInfo instead of 
> AudioUnitGetProperty with a null pointer when wanting to fetch a property's 
> size.


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