@ItsAllInMyHead "Your misinformation makes it more confusing" ??
It wasn't me but someone included the R8 in this R7 thread on HeadFi. So we have to talk about apples/ oranges and always parse our answers accordingly. Yes, the R7 firmware releases in the past year have been more complicated. The R7 (R2R 7) V2 firmware had six separate sub releases - three for sound flavor and an additional three to support Optical on IN 4 versus I2S. V3 has four firmwares for the R7 (2 sound flavors + IN 4 optical or I2S) and two for the R8 (2 sound flavors). R7 users may appreciate this information but doesn't apply to the R8 so ignore it. Is this "misinformation"?
If you can't update firmware or refuse to learn then you will not get the best from these DACs IMO. Your choice. Every major firmware release for the R7 has increased sound quality, improved functionality, or added features.
And take our suggestions with some measure of salt. We all have different tastes, equipment, and ears. You have to discover what works best for you.
We have to repeat ourselves a lot on this thread. It gets old but is mainly for new users. The explanation of why R7 firmware releases have been more complicated illustrates my point. Kingwa is the ultimate authority and if something is confusing ask him.