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dCS Debussy DAC User Manual
STEP 2 – Setting up the USB source
If you do not want to use a USB source, go to STEP 3.
This section gives basic advice for setting up the computer.
For more detailed advice and more advanced options, please visit
download the current version of the "dCS Guide to Computer Audio".
To load the Windows drivers for USB Class 2:
• If ASIO4ALL is loaded on your computer, please uninstall it - otherwise the dCS driver will not work
correctly.
• Make sure the DAC is set to USB Class 2 - otherwise the driver installation will fail.
• Power up the DAC and the computer.
• Load the dCS USB Audio Class 2 driver disc for Windows into the computer's CD drive.
• If the installation does not start automatically, select "Run setup.exe".
• Follow the on-screen prompts.
• When prompted, connect the DAC to the computer's USB port.
• Wait until installation is complete, then remove the driver disc and re-start the computer.
If you connect a Debussy DAC set for USB Audio Class 2 to a Windows computer
!
without first loading the drivers, the interface will not work and the computer will display
the warning message:
A word about Music Playing Software
There are countless programs that can play music on Windows
Unfortunately, not all of them present the data completely unprocessed to the USB ports. For
example, Windows Media Player re-samples all data to 24 bits, albeit at the original sample rate, while
iTunes rate converts data as necessary to the output sample rate set in the OSX Audio set-up panel.
With such a proliferation of playing software, and with updates being issued daily, it is impossible for
dCS to be fully up-to-date with the behaviour and performance of all programs. If you have questions
or problems, we would urge you to take them up with your software vendor. What we will say is that
different programs operate very differently and it is well worth finding out exactly how your particular
program processes the audio.
One particular problem concerns iTunes when running on Windows systems. The default output word
length is 16 bits and must be changed to 24 bits for correct operation. To do this, click on
Control Panel
> Quicktime. Click on the
Size
field of the
Sound Out
Debussy DAC Manual v2_2x.docx
Device cannot
Audio
section.
Page 11
www.dcsltd.co.uk/page/support
start.
TM
and Apple Mac OSX
tab of the Quicktime panel and select
Software Issue 2.2x
August 2013
and
TM
PCs.
Start
>
24 bit
in the
English version
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