Metric Halo SpectraFoo - Manual (Page 13)

Introduction
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(at the time of this writing). If you have a very old Mac, it may not support Quartz Extreme, and if this is
the case, you will not be able to take advantage of the OpenGL optimizations available in SpectraFoo.
• A CoreAudio compliant audio I/O device – Many USB devices (including the Macintosh Built In Audio)
are implemented as two separate devices: one CoreAudio device for input and one for output. You will
need to create an Aggregate Device in the Audio Midi Setup utility to configure multiple CoreAudio
devices to appear to SpectraFoo (and all other CoreAudio clients) as a single unified device.
SpectraFoo’s physical I/O capability and supported sample rates are controlled by the audio hardware
you choose to use with SpectraFoo. For best results, and the highest degree of compatibility testing out-
of-the-box, we recommend that you use a member of Metric Halo’s Mobile I/O Family of Firewire audio
interfaces.