User Manual

92
User's Guide Fireface UFX II © RME
32.2 Class Compliant Mode under Windows and Mac OS X
Windows does not support USB Audio 2.0 (UAC 2). The UFX II will be detected, but automatic
driver installation will fail. This is important to remember. Connecting the UFX II to the PC after
having it used with the iPhone/iPad one might forget that it is still in CC mode.
Mac OS X supports USB Audio
2.0, even with more than 2
channels. The UFX II offers 24
input and 24 output channels at
up to 96 kHz. It is shown as
“Fireface UFX II (xxxxxxxx)“ in
the Audio MIDI Setup, in both
normal and CC mode. In CC
mode the USB Settings will
vanish from the Dock, and
TotalMix will – if at all – show a
‘disconnected’ UFX II.
The Audio window in the Audio
MIDI Setup lists two available
modes: 12 channels and 24
channels. The sample rate
shown here is the one set at the
UFX II.
With 12 channels chosen up to 192 kHz sample rate can be used. Under iOS 192 kHz is not
possible, as there exists no way to select the second Alternate Setting on the record side. iOS
and all apps always use the first setting, 24 channels, which limits the sample rate for record
and playback to 96 kHz.
33. Supported Inputs and Outputs
In Mac OS X, either the first 12 or 24 channels will work, depending on the choice in the Audio
MIDI Setup. In both cases the playback signal of channels 1/2 can be copied to other outputs.
When connected to an iPad, the analog mic/line input 1 works with mono apps, inputs 1 and 2
with stereo apps (both dual mono and stereo), and up to 8 inputs with 8-channel applications
like MultiTrack DAW and Music Studio. Garage Band supports all inputs, but only two at a time.
Auria and Cubasis can record all 24 inputs simultaneously.
Playback will use the rear-side analog outputs 1 and 2, or even more channels if the app sup-
ports such operation. The UFX+ can optionally copy the playback channels 1/2 to outputs 9/10
and 11/12, for easier monitoring (CC routing Phones). The current routing can easily be
checked and verified with the level meter display. All outputs can be processed independently
(volume, EQ, dynamics, FX return).
Configuring the UFX II is ideally done via the app TotalMix FX for iPad, otherwise by loading
Setups. These are written into the unit while operated with PC/Mac via TotalMix FX, also storing
control clock mode master or AutoSync and the current sample rate. Using RME’s iPad app the
routing Phones is automatically disabled as all routing is now controlled by the app.
The UFX II (and with it the iPhone/iPad) will be synchronized to an external digital sample rate if
there is a valid digital input signal. With a wrong sample rate heavy audio noise will occur. With-
out an AES/SPDIF or ADAT input signal the UFX II enters master mode and uses the sample
rate set by Mac OS X or iOS (the app in use).