On 09/16/2014 03:17 PM, Paul Davis wrote:
>
>
> On Tue, Sep 16, 2014 at 4:12 AM, Hans Wilmers <hanswil at notam02.no
> <mailto:hanswil at notam02.no>> wrote:
>
>     On 09/16/2014 09:55 AM, Hans Wilmers wrote:
>
>
>         The USBPre2 works fine with UAC2 on recent kernels.
>
>         With Fedora 19, kernel 3.14.17, I get these samplerates:
>         32000/44100/48000/88200/96000/192000
>
>
>     I have to moderate that a bit:
>     I can set up all sample rates as above, but the effective sample
>     rate as shown by qjackctl is max. 48000.
>     No error message is shown in case the effective sample rate is not
>     the chosen one.
>
>
> JACK asks ALSA for the nearest sample rate available. It does not print
> errors when they do not match.
>

>OK, I understand.
>The max. samplerate we get through Alsa is 48000 then.

> / Hans

Hello.

Can you try to record 30 second of anything higher than 48khz and check the file with Audacity or Mplayer ? - mplayer -identify file.wav - or whatever is your most loved application. 

By the way, the 48khz Max, are 16 bits or 24 bits ? You have the choise of this quantization between 16 or 24 bits ?  


The - almost - last word  : What we can do from here...this card support UAC2 but refuse to announce itself correctly and Gnu/Linux/Alsa perfectly support UAC2 ..... Any solution ? Begging Sound Devices to update 10 lines of code in a new firmware ? Asking someone at Alsa-project to make a patch if possible ? Any clue anyone ? 

Best.