EVO PHONODAC TWO
DXD-DSD A-TO-D AND D-TO-A CONVERTER – PHONO PREAMP
REVISION P
R
A – JULY 2016
Copyright © 2016, M2Tech Srl
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Figure 12
10.2. Plug’n’Play Operation with Linux
As explained in the introductory paragraph to the present chapter, the
EVO PHONODAC
TWO
is provided with an USB interface compatible with USB Audio device Class 2 which is
natively supported by Linux with ALSA since its 1.0.24 release.
NOTE: given the vast availability of different Linux distributions, often heavily
customized, it may be necessary to check that both kernel and ALSA versions are
suitable for native USB Audio Device Class support. When in doubt, ask the creator
of your Linux distribution for more information.
As with Apple OSX, with Linux it is necessary to choose the
EVO PHONODAC TWO
as the
output device. This can be done accessing the audio management window and setting the
various parameters as shown in Fig. 13 which shows Ubuntu’s audio configuration
windows. Ubuntu is one of the most successful Linux distributions. Other distributions may
differ in the number and kind of available parameters. The window displayed in the figure
lists two M2Tech audio devices: they are actually the same device that is the
EVO
PHONODAC TWO
, it is therefore sufficient to select any one to choose the
EVO PHONODAC
TWO
as the output audio device.
By setting the
EVO PHONODAC TWO
as predefined audio output device, we make it
available to all those apps which rely on the operating system to transport audio. This is
mandatory to listen to streaming music by a browser, for example. This operation mode
already allows for high quality playback (sampling frequency up to 192kHz). It also could
be desirable to use a player which doesn’t rely on the operating system to transport audio,
in order to overcome its limits (for example, to listen to audio file samples at 352.8kHz or
DSD audio files).
