Is there any DAC compatible with FreeBSD?

I've been listening to the dual PCM56 DAC for a couple of weeks now using the setup shown in my last photo, and I can highly recommend it, I'm amazed how good it sounds at the low price. I bought a couple of spares since they are so cheap! I think there may be a burn-in effect, it seems to sound even better after a couple of weeks playing. I think the passive low-pass filter they have implemented works well. Surprisingly, I think it sounds better than the WM8740 I tested earlier. For a low cost system, this is very nice IMHO. Of course the headphone amp, SMSL PO100 and linear PSU get the most out of the two PCM56 chips; I'm sure any other good quality headphone amp, would work just as well. Very easy, fatigue free listening, very musical. This was tested using DT-990 PRO headphones.

I've got an SU-1 on order to try out one of the AK chips, but I'm really pleased with this small BB NOS dac.
 
I use a general USB scarlet 8i6 focusrite. It works out of the box in Linux, no need for any driver, i.e. usbaudio & alsa.
Could not get it to work in Freebsd.
As long as there is no "qasmixer" application or alternative mixer detecting all channels many will not work ...

ardour5/jack didn't worked neither with my usb-dac.
I successfully used a Focusrite Scarlett 2i2 with FreeBSD, with no drivers. But it only has two channels. I have read other places that more channels are a problem.
 
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