I have 3 NAA:
At the office, I am using RPi2 -> USB -> Uptone REGEN -> QNKTC 1.2 (PCM5102)
- My “production environment” is BBB with Botic kernel -> Hermes -> Cronus/Rhea -> I2S -> DAM1021
- My backup is a modified RPi3 with PiCorePlayer (I managed to install and configure RAAT and disabled all other services).
I don’t think I can tell the difference between BBB/Botic and RPii3 and I’d suspect the reason is the limitations of DAM1021 in its stock form.
I also experimented with Odroid C2. Via USB I couldn’t tell the difference with RPi2/3. I got the HiFi shield 2 and can’t make it work yet, but @Dan_Knight is helping a lot with this at the moment.
BTW, I’m liking the cheap PCM5102 compbined with HQPlayer upsampled to 192KHz a lot.