Olivier Schmitt wrote: > When the clock Rate is to 5, we see on our watterfall that the sample rate > will change on the hardware but alsa dont let somme software to use 192khz. How exactly did you observe this? Does "aplay -D hw:USB -t raw -c 2 -f S16_LE -r 192000 -d 1 /dev/zero" work? Regards, Clemens