Behringer U-phoria UM2

#1

Has anyone tested the USB sound card Behringer UM2 on patchbox?
It is a really affordable solution to have a decent sound on raspberry pi.
The sound card works in a normal distribution of Raspbian, but i dont know if the driver is in Realtime kernel build.
The UM2 uses the pcm2902 chip.
Thanks

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#2

The OS should use the standard USB audio driver for USB audio interfaces. See here for a table with recommended buffer settings based on audio card type. The hat-type audio cards for Raspberry Pi can have lower buffers because they communicate via the dedicated I²S interface on the GPIO pins.

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#3

I have not used patchbox OS but I had a UM2 and tried it with MODEP image on my Pi. It does not handle low latencies well on Pi, I think it needs buffer of at least 512, maybe even 1024 samples to work on a Pi. If youre running on core i7 then you may get better results :slight_smile: i had um2, still have umc22 and umc202 and also had umc404. Guess what, the more it costs, the lower min latency it can handle (tested on win PC though). If I remember correctly, only umc202 and 404 handled 128 sample mode w/o issues.

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