64
5. Using the Unico CD Due USB input with an Apple
computer
The
Unico CDDue
USB input complies with USB Audio Class 2.0
specifications; therefore it’s natively supported by OSX operating systems
since version 10.6.8 and doesn’t need any drivers. The Unico CD Due USB
input is recognized by any Apple computer as soon as it’s connected to one
of its USB ports and is listed amongst the output audio devices as shown in
figure 23.
Figure 23
The user must select the “Unison USB DAC 1” peripheral to send her/his
computer’s audio to the
Unico CDDue
USB input. The OSX operating
system allows users to choose the sampling frequency of the audio signal
sent to the
Unico CDDue
USB input. This can be done through the MIDI
Control Panel, as shown in Figure 24. Whichever sample rate you choose
will define the exact output to the
Unico CDDue
, regardless of whether the
file can play at a higher resolution.