IanCanada newbie, advice request on learning streaming source options, no DAC needed

I've become interested in in IanCanada's work.

I have a new DAC and Amp on the way. Which is High quality for me; Emotiva XDA-3-DAC-balanced, Emotiva XPA-1 balanced Monoblock's.

I am currently using Amazon Music, Firestick, and an older Marantz receiver SR7002, and some fairly decent Towers with good tweeters Carnegie-CST-1.

I understand recently now, that ROON and such does not accept Amazon music.

I enjoy having time with each stage of improvements.

As the next stage of listening;
It looks like initially; I will be feeding Amazon > the Marantz Receiver > digital coax to the new coming balanced DAC > balanced amps.

For one of the next stages, would IanCanada's devices be able to receive HDMI feed from the Amazon firestick? or am I missing the point?
Perhaps the Ian devices accept ethernet only? and will then need ROON and the other things that come with that?

I currently have an NVIDIA shield still in the box that I'm debating to return. I understand the NVIDIA shield $200, will accept Amazon music, and feed digital to the new coming DAC.

Advice?
 
Ian's devices mostly hinge around the benefits of galvanically isolated FIFO buffering (i.e. FIFO_Pi). A lot of the other stuff is to help get the best SQ and the most utility out of the FIFO. The FIFO itself works with I2S signals, so if your dac doesn't support that then maybe not so much utility for you?
 
Thank you very much for this advice 🙏
I have recently learned much, and I will continue to develop wisdom.
I've decided to enjoy this new journey...
An Emotiva DAC and Monoblock Amplifiers are expected for delivery soon. (25% off sale 😜)
I will connect what I have and learn this new sound.
This new equipment is expected to be an improvement to my current best ever... an old Marantz SR7002 100W / CH receiver...)
I will then ponder next improvements.
Thank you very much for assisting me in understanding this new technology 😎🙏