Danba, D42 works without USB Recorder, correct?

Thanks! That enumeration tools and article helped.   So, for Fiio E10 thats clearly not an enumeration issue, as device introduces 4 consequitively numbered interfaces. Here some output from USBView (cleaned away lots of stuff): Device Descriptor: idVendor: 0x1852 idProduct: 0x7022...

Actually I haven't seen in Samsung branch of kernel codes (I checked I9300 update 7) mentioned by ALSA gurus patch. So I believe enumeration issue still presents.   But, surprisinigly, I'm really not sure that for my FiiO E10 there is the same problem. At least I wasn't able to reproduce...

Quote: Yes - you're right it is in mixer.c, I've pointed that in my message :) The question is why it fails to read desired information from FiiO chip - Since I've not found a way (yet) to run this code under gdb, data sheet for USB chip on FiiO E10 could be useful to find some...

I was glad to find this useful tread on internets, thanks DanBa for your contribution!   Just want to report that Galaxy S3 works fine with FiiO E10 with USB Audio Recorder Pro.   But in native mode I'm getting in dmesg this: <7>[ 1475.334922] c3 usb 2-1: adding 2-1:1.1 (config #1...