Hi There This patch add native DSD support for Gustard U16/X26 USB Interface. Tested on my unit, working properly. Hence submit the patch. Cheers. Thank you very much. Pig --- a/sound/usb/quirks.c 2019-09-22 21:28:09.757897000 +0000 +++ b/sound/usb/quirks.c 2019-09-22 21:33:36.892274800 +0000 @@ -1369,6 +1369,7 @@ case USB_ID(0x22d9, 0x0461): /* OPPO UDP-205 */ case USB_ID(0x2522, 0x0012): /* LH Labs VI DAC Infinity */ case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */ + case USB_ID(0x292b, 0xc4b3): /* Gustard U16 */ if (fp->altsetting == 2) return SNDRV_PCM_FMTBIT_DSD_U32_BE; break; _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel