USB DAC SMSL DO300 not recognized

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1

Volumio 3 Issues?

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HI,
Yesterday I added an external one to my equipment; the DAC s.m.s.l. DO300.
I connected it to my DIY RPi 4B streamer, on USB port. My Pi4 already includes HIFI sound card Berry DIGI + pro (for S/P DIF output only), but volumio didn’t recognize the new DAC.
Is there a procedure, a special setting for that DAC? I found some posts in this forum, but without solving the problem.
Then I tried the DAC with fanless MINI PC with standard Windows 11 player and the result is amazing. Indeed I have compared many and same FLAC files, in the same conditions on my YAMAHA RX-V1200 and Infinity Delta n40. The sensation is like turning on the light or pulling a wool cover off my speakers. A really big improvement.

Is it possible that there is no way to connect the new DAC to Volumio?
thanks

2

Hi
I assume from your post that you have a HiFBerry Digi + Pro attached to your Raspberry Pi. If you look at Playback Options you should have I2s On and Hifiberry Digi + Pro selected as DAC. If this is the case connect to your s.m.s.l. DO300 using a coaxial cable or optical cable from the HiFiBerry. That worked for me. :smiley:

3

Yes, but it’s not the same thing. The best way is to connect the Pi4 directly to the USB port of the DAC, exactly as I did with the Windows mini PC. Let’s take the case where I remove the minus DIGI+ card, there are at least 2 good reasons for this practice. 1) Avoid frequent “ALSA errors” 2) Converting to an optical signal from electrical digital adds jitter. 3) SMSL requires a USB connection as the preferred input.

4

best thing you can do is to boot without the SMSL connected.
Then when Volumio is up, connect the DAC to your usb port, followed by generating a log file.
How to create a log
Post the URL here for analysis.

5

http://logs.volumio.org/volumio/ZcIIiEL.html

Thanks

6

I don’t see anything being connected to any usb port after starting volumio.
Are you sure your cable is OK? Does the DAC have a led or something to show it is switched on? I know, stupid questions, just making sure…

7

http://logs.volumio.org/volumio/BRMWrVi.html

Remember that I’ve already checked that usb port works fine (used also as external file storage). The cable USB is the same on mini pc setup (works fine)

thanks

8

logs.volumio.org/volumio/Tw7gWdX.html

After USB port setting on the DAC

9

Your last log shows the smsl dac connecto to port usb 1-1.2
And aplay -l shows the DAC as card5, the way it should be.

The other logs don’t show any smsl device connecting to a usb port.
I guess with the last one it works?

10

Thank you gkkpch, but I don’t find the DAC in the list DAC model… at volumio config. How does Volumio Calls the DAC as card5?

wide

11

Ok, now it works. Need to turn-off I2S DAC flag, and remove also coax/optical cable connection from RPi4. Maybe It depends from contemporary presence of Digiberry + card.
Thank you guys :slightly_smiling_face: