Two Questions

[Lttlwing16]

Very odd to have I2S sync errors. Maybe try contacting Audiophonics to see if they have tested the device with moOde 8 releases. It could be some sort of hardware or compatibility issue?

Will do. I actually already have a service ticket open with them about the PSU jumper pins on the DIGIPI+I2S not behaving as configured on their website. 

That said, since this is occurring across two different HATs and at least 7.x and 8.x versions of MoOde what is the likelihood the 3B+ is the culprit? I believe I have a spare around the house, so I can it out test later. 

Additionally, there is at least some evidence the error is harmless and occurs when the bcm2835-i2s is set as clock slave. I believe you were even involved in the conversation at github.