Do I really Need a Digital to Digital Converter?

So opinions seem to vary and with no real consensus it probably means I should consider getting a used DDC and if it doesn't improve things in a worthwhile way, I can always resell it at minimal to no loss. From my understanding both my streamer and DAC implement USB in a very favourable way and this is how I do connect them. I have tried other DAC inputs (AES and Coax) but have preferred the USB route. I mostly stream Tidal but also play music from an internal drive in the Auralic G2 where I have some files of higher than CD resolution.

There is never a consensus lol that's the fun of audio. You have an excellent streaming/digital setup you can enjoy the great sound you're getting now or tinker. Either way have fun and report back your findings!

So opinions seem to vary and with no real consensus it probably means I should consider getting a used DDC and if it doesn't improve things in a worthwhile way, I can always resell it at minimal to no loss.

That was exactly my plan, but after hearing my Pegasus with the i2S connection there was no way the Iris was going anywhere.  Lots of diverse opinions here, but I’m the only one actually using the same DAC as you so perhaps you might consider that for what it’s worth. 

Soix has a good point, same dac, maybe same result. The search begins

I have a high resolution room+speakers+amps. I use the Denafrips Hermes DDC+Venus combo. I don’t miss the Hermes all that much if l pull it out. On the other hand, i definitely miss the BACCH processor if I pull it out!!

"Spend in the right places", a wise man once said.