Operation Manual
Another optional MDC module that can be installed in the C 375BEE is
the MDC DAC module. When installed with C 375BEE, the MDC DAC
module brings the convenience of music to your system with NAD musical
performance fully intact.
USB is a computer standard for high speed data transmission but it has a
feature set tilted towards PC use. USB sends information in “data packets”
which makes the system very robust. There is also a trac manager that
can vary the size and sequence of the packets – good for PC, bad for music.
These timing variations create a condition called “jitter” – small
variations that create a harsh distortion. Thanks to a technique known as
“asynchronous USB”, MDC DAC module’s high precision clock eliminates
this distortion (jitter) usually associated with music in a computer
environment.
With the DAC module now installed in the C 375BEE, refer below for
descriptions of key DAC module parts.
IDENTIFICATION OF CONTROLS
REAR PANEL
OPTICAL
IN
USB
OPTICAL
USB
DAC MODULE
PHONO
A B C
A OPTICAL IN
• Connect OPTICAL IN to corresponding optical output of sources
such as CD, DVD or BD players, digital cable box, digital tuners and
other applicable components.
B DAC MODULE INPUT SELECTOR
• Slide this switch to select the active input to the DAC module. Set
to OPTICAL for the S/PDIF source to be selected. For computer
audio to be selected, set to USB.
• Set to PHONO if the optional PP375 Phono Preamplier module is
installed.
NOTE
Press DISC/PHONO input selector of C 375BEE to switch to the DAC
module’s current active source.
C USB
• Using Type A to Type B cable connector (not supplied), interface
computer audio to this asynchronous Type B USB input to directly
stream 24 bit/96 kHz PCM content from your PC or MAC.
• In order to stream computer audio to the DAC module, ensure that
the Sound or Audio device of your computer is set to “NAD USB
Audio”. Check with your computer’s operating system on how to set
up or select “NAD USB Audio” as the Sound or Audio device.
SPECIAL NOTE ABOUT PC COMPATIBILITY WITH THE
USB INPUT OF THIS PRODUCT
Because of the great variety of PC-compatible computer systems,
operating system versions, and peripherals currently in use, we do
not guarantee ‘glitch free’ performance with all such systems. This
NAD product uses a special ‘asynchronous’ USB mode that eliminates
the very high levels of jitter (digital timing errors) endemic to the
USB interface. While this mode oers superior audio quality, it is not
a common mode of operation for some USB driver software. If you
experience audio dropouts we suggest trying an alternate PC or PC
operating system. In general, we nd Apple computers to be the most
stable for this application.
For those using PCs, we have developed a NAD USB Audio driver that
improves your PC’s performance, especially those running Windows 7.
Visit NAD’s website (http://nadelectronics.com) and go to this product’s
page. Then, download “NAD USB Audio Driver” from the “Manuals and
Downloads” tab. Install the NAD USB Audio Driver to your computer by
following the instructions provided.
NOTE
Refer to the Asynchronous MDC DAC Mounting Instruction sheet that
comes with the MDC DAC module package for installation guidelines.
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