User guide
MOTU AUDIO CONSOLE
32
The Samples Per Buffer setting also impacts how 
quickly your audio software will respond when you 
begin playback, although not by amounts that are 
very noticeable. Lowering the Samples Per Buffer 
will make your software respond faster; raising the 
Samples Per Buffer will make it a little bit slower, but 
barely enough to notice.
Monitoring live inputs without plug-in effects
As mentioned earlier, CueMix FX allows you to 
monitor dry, unprocessed live inputs with no delay 
at all. For complete details, see chapter 9, 
“Reducing Monitoring Latency” (page 55).
Wave support for legacy (MME) software
Windows only exposes the first two channels of a 
multi-channel WDM audio stream to applications 
which use the legacy (MME) multimedia interface. 
The Enable full Wave support for legacy (MME) 
software (less efficient) option forces the 
UltraLite-mk3 multimedia driver to expose all 
channels as stereo pairs, providing full MME 
support.
If your host audio software does not directly 
support WDM audio and instead only supports 
legacy MME drivers, use this option to access 
multiple UltraLite-mk3 input and output channels.
If your host audio software does directly support 
WDM audio, leave this option unchecked for 
optimal performance.
This option is only available when the multimedia 
driver has been installed, and it defaults to being 
not checked. 
Enable Pedal
This setting applies to other MOTU FireWire audio 
interfaces, but it does not apply to the 
UltraLite-mk3.
‘ULTRALITE-MK3’ TAB SETTINGS
Phones Assign
The Phones Assign setting lets you choose what you 
will hear from the headphone jack. Choose 
Main Out 1-2 if you’d like the headphone output to 
match the main outs. Choose Phones if you would 
like the headphones to serve as their own 
independent output, which you can access as an 
independent output destination in your host audio 
software and as an output destination for the eight 
on-board CueMix FX mix busses.
Main Out Assign
Choose Main Outs from the Main Out Assign menu 
to treat the Main Outs as their own independent 
output pair. Choose any other output pair to cause 
the MAIN OUT jacks to mirror (duplicate) the 
output pair you choose.
Return Assign
The Return Assign menu lets you choose any pair of 
UltraLite-mk3 audio outputs. The audio signal 
from this output pair is then sent back to the 
computer via the Stereo Return 1-2 bus. This stereo 
return bus from the UltraLite-mk3 appears in your 
host software alongside all other UltraLite-mk3 
inputs, wherever your host software lists them.
The UltraLite-mk3 stereo return bus can be used 
for a variety of purposes. For example, you could 
use it to send a final mix being played through the 
UltraLite-mk3 back to the computer, where you 
could record it for mastering or archiving 
purposes.
As another example, you could use the stereo 
return bus to capture tracks played from your host 
software, along with live inputs being routed 
directly through the UltraLite-mk3 hardware via 
CueMix FX (with or without CueMix effects 
processing on the live inputs).










