I've never used Echo's products, but the ALSA wiki seems to suggest there's some basic functionality there:

http://www.alsa-project.org/main/index.php/Matrix:Module-indigoiox

- Ian


On Mon, Dec 10, 2012 at 5:15 PM, Martin T <m4rtntns@gmail.com> wrote:
Ian,

thank you for the reply! All I found from RME product line for
ExpressCard is the HDSPe
ExpressCard(http://www.rme-audio.de/en_products_hdspe_expresscard.php)
adapter which seems to provide interface to external RME I/O-boxes
like "Multiface II" or "Digiface". This setup would be bit overkill
and nothing but compact. Last but not least, this would be too
expensive. I would like to keep this ExpressCard sound card below
300$.

Any other suggestions? I'm especially interested in experience with
Echo "Indigo IOx ExpressCard" sound card in Linux environment.


regards,
Martin


2012/12/10 Ian Dunham <iandunham@gmail.com>:
> Check out RME's solutions. They are highly supported in Linux and are the
> best converters in the industry.
>
>
> On Mon, Dec 10, 2012 at 1:51 PM, Martin T <m4rtntns@gmail.com> wrote:
>>
>> Hello,
>>
>> I would like to buy high-quality sound card for my laptop. There are
>> no other requirements besides quality audio output, ExpressCard 34 or
>> 54 form-factor and single 3.5mm TRS jack socket. Has anyone tested
>> Echo "Indigo IOx ExpressCard" sound card under Linux(I mainly use
>> Debian or Debian-based distributions)? According to indigoiox.c C
>> source file in ALSA source tarball, Echo "Indigo IOx ExpressCard"
>> seems to be supported. Any practical experience with this particular
>> sound card under Linux? In addition, what sort of improvement I should
>> expect compared to Intel Corporation N10/ICH 7 Family High Definition
>> Audio Controller? Or should I prefer some other high-quality sound
>> card for ExpressCard slot?
>>
>> regards,
>> Martin
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>
>