Allo DigiOne vs USB output on RPi 3b

Audio Gear Talk Allo
1

Which is higher quality sound Allo DigiOne vs USB on the RPi 3b?

2

This can be very highly dependent on the USB input of your DAC (a lot of DACs have poor USB inputs). What DAC do you have?

3

I have a Pro-ject Pre Box S2 Digital

4

I’ve been researching this and I understand the RPi 3b has a shared USB bus (but the anti jitter USB connectors help apparently) but the new RPi 4 has a separate USB bus, still hunting specific reviews for audio purposes. Thinking of pairing it with a good USB input / RCA output DAC.

5

I found this:

6

My first transport was a Rapsberry Pi 3B+ that I used to run RoonBridge on DietPi. With this setup I could flawlessly play DSD128. But with this same setup, I had a hardtime playing DSD128 from HQPlayer Embedded to NAA on DietPi. It seems that DSD128 was close to the USB throughput on the RPi 3B+.

I added an Allo DigiOne to this RPi 3B+ and installed RoPieee. It works fine to me. I play non-upsampled PCM streams with this transport.

The HQPlayer DSD streams go to an Intel based NAA.