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RE: Tuning Linux/MPD/Alsa for best sound on ALIX processor

Are you sure you hear any difference? IMO the modprobe command did not do anything. For two reasons:

1) If the module was already loaded (which was the case unless you loaded it via modprobe before hooking your USB DAC), it was not realoaded. The command throws no error though.


2) The valid values of nrpacks argument are 1 - 20. Anything above that will throw an error:

root@htpc:~# modprobe snd-usb-audio nrpacks=100
FATAL: Error inserting snd_usb_audio (/lib/modules/2.6.32-32-generic/updates/alsa/snd-usb-audio.ko): Invalid argument


I am afraid only blind tests will tell you if your config changes yield any sound changes.

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