El Capitan USB audio problems.
I just installed EL Capitan on my Late 2012 Mac mini. I have connected NuForce Udac2 DAC to usb port and it constantly disconnects from computer. I can't play any audio thru DAC. Tried changing midi settings, reseting Pram nothing changes. On windows PC dac is working without any problem. Everything worked OK in Yosemite.
There is obviously some problem with USB audio in EL Capitan.
DO NOT UPGRADE to EL Capitan if you have some USB audio cards important for work.
This problem came up in beta releases and still Apple did not fix it. This is a HUGE let down for me, especially considering how many people use Dacs or usb speakers these days.
I guess there is no difference between Apple and Microsoft these days. Everything that is released is not a finished product.
Guess I'll have to wait for 10.11.X for a fix...
Again, awful job Apple.