[LAU] Recommended USB interface with 2 XLR inputs?

Clemens Ladisch clemens at ladisch.de
Wed Oct 12 07:22:11 UTC 2011


Bernardo Barros wrote:
> The manual says I must start the device holding the "1" button, to get
> "full speed" USB1.
> 
> Without this I can see the device, but I can't hear anything from it.

>   iManufacturer           1 Sound Devices
>   iProduct                2 USBPre2
>     Interface Descriptor:
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      1 Control Device

This is audio class 1.0.
Please show the "lsusb -v" output for 192 kHz mode.

> From the website:
> 
>   Class Compliant Drivers
> 
>   As a class-compliant audio device, the USBPre 2 is limited to a
> maximum data rate of 24-bit, 48 kHz in Windows, Linux, and Mac OS
> versions 10.4 to 10.5.7.
>   Mac OS 10.5.8 and higher support the audio class 2.0 device and can
> address the USBPre 2 up to 24-bit, 192 kHz.

Audio class 2.0 should work with Linux 2.6.35 (but an even newer
kernel wouldn't hurt).  Which kernel version are you using?


Regards,
Clemens


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